{ "generated_at": "2026-10-16T16:37:57.625Z", "disclaimer": "Scores are editorial and derived from product reviews, published warranty terms and moderated user reports.", "brands": [ { "id": "7b2e2cbe-d28d-4c0f-8dc7-93860831caca", "slug": "getadomtune", "name": "GetaDomTune", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 5, "review_count": 36, "product_count": 2, "quality_score": 9.69, "benchmark_rating": 4.77, "benchmark_tier": "segment", "top_segments": [ "Cooling", "Engine Bay Dress-Up" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 9.7, "weight": 3, "rationale": "Based on 36 verified-buyer reviews across 2 products. Raw average 5.00/5. Compared against a 4.77/5 benchmark drawn from the product segments this brand sells in (Cooling, Engine Bay Dress-Up). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.9, "weight": 0.75, "rationale": "36 reviews across 2 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.7 }, { "id": "a6b59244-ab0b-4276-950e-565d2c0fc598", "slug": "gsc-power-division", "name": "GSC Power Division", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.98, "review_count": 63, "product_count": 14, "quality_score": 9.59, "benchmark_rating": 4.79, "benchmark_tier": "segment", "top_segments": [ "Engine Internals", "Engine Components" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 9.6, "weight": 3, "rationale": "Based on 63 verified-buyer reviews across 14 products. Raw average 4.98/5. Compared against a 4.79/5 benchmark drawn from the product segments this brand sells in (Engine Internals, Engine Components). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.2, "weight": 0.75, "rationale": "63 reviews across 14 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.7 }, { "id": "e231cc2d-8ac9-40f6-96f8-59014f81dcf4", "slug": "enkei-racing", "name": "Enkei Racing", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.97, "review_count": 36, "product_count": 18, "quality_score": 9.56, "benchmark_rating": 4.76, "benchmark_tier": "segment", "top_segments": [ "Wheels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 9.6, "weight": 3, "rationale": "Based on 36 verified-buyer reviews across 18 products. Raw average 4.97/5. Compared against a 4.76/5 benchmark drawn from the product segments this brand sells in (Wheels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.9, "weight": 0.75, "rationale": "36 reviews across 18 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.6 }, { "id": "a86b71c2-0ebd-4b83-b5b7-9498b8e1175c", "slug": "revel", "name": "Revel", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 5, "review_count": 22, "product_count": 8, "quality_score": 9.45, "benchmark_rating": 4.78, "benchmark_tier": "segment", "top_segments": [ "Cat-Back Exhaust", "Gauges", "Coilovers", "Fuel System" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 9.5, "weight": 3, "rationale": "Based on 22 verified-buyer reviews across 8 products. Raw average 5.00/5. Compared against a 4.78/5 benchmark drawn from the product segments this brand sells in (Cat-Back Exhaust, Gauges, Coilovers, Fuel System). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.6, "weight": 0.75, "rationale": "22 reviews across 8 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.5 }, { "id": "7c4c6ab0-82c1-49ad-b5ee-cbc8092fc410", "slug": "south-bend-clutch", "name": "South Bend Clutch", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 5, "review_count": 12, "product_count": 5, "quality_score": 9.57, "benchmark_rating": 4.65, "benchmark_tier": "segment", "top_segments": [ "Clutches" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 9.6, "weight": 3, "rationale": "Based on 12 verified-buyer reviews across 5 products. Raw average 5.00/5. Compared against a 4.65/5 benchmark drawn from the product segments this brand sells in (Clutches). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.2, "weight": 0.75, "rationale": "12 reviews across 5 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.5 }, { "id": "14a373ca-a227-4a5e-b5bb-21a6070f2884", "slug": "burger-motorsports", "name": "Burger Motorsports", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.96, "review_count": 51, "product_count": 4, "quality_score": 9.23, "benchmark_rating": 4.81, "benchmark_tier": "segment", "top_segments": [ "Engine Management", "Fuel System" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 9.2, "weight": 3, "rationale": "Based on 51 verified-buyer reviews across 4 products. Raw average 4.96/5. Compared against a 4.81/5 benchmark drawn from the product segments this brand sells in (Engine Management, Fuel System). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.1, "weight": 0.75, "rationale": "51 reviews across 4 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.4 }, { "id": "46ad4982-7a03-4ee6-ba74-1a2f8aa08c55", "slug": "koyo", "name": "KOYO", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.93, "review_count": 30, "product_count": 6, "quality_score": 9.02, "benchmark_rating": 4.79, "benchmark_tier": "segment", "top_segments": [ "Cooling", "Engine Bay Dress-Up" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 9, "weight": 3, "rationale": "Based on 30 verified-buyer reviews across 6 products. Raw average 4.93/5. Compared against a 4.79/5 benchmark drawn from the product segments this brand sells in (Cooling, Engine Bay Dress-Up). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.8, "weight": 0.75, "rationale": "30 reviews across 6 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.3 }, { "id": "75b1e2b7-3c9e-4ccc-996c-2eb21d02f9d3", "slug": "mach-v", "name": "MACH V", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.89, "review_count": 253, "product_count": 5, "quality_score": 8.84, "benchmark_rating": 4.8, "benchmark_tier": "segment", "top_segments": [ "Interior Accessories" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.8, "weight": 3, "rationale": "Based on 253 verified-buyer reviews across 5 products. Raw average 4.89/5. Compared against a 4.80/5 benchmark drawn from the product segments this brand sells in (Interior Accessories). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "253 reviews across 5 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.3 }, { "id": "9e1737f1-c6f3-4db8-8f21-740e81a38f85", "slug": "fluidamper", "name": "Fluidamper", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 5, "review_count": 42, "product_count": 3, "quality_score": 8.92, "benchmark_rating": 4.91, "benchmark_tier": "segment", "top_segments": [ "Engine Components" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.9, "weight": 3, "rationale": "Based on 42 verified-buyer reviews across 3 products. Raw average 5.00/5. Compared against a 4.91/5 benchmark drawn from the product segments this brand sells in (Engine Components). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9, "weight": 0.75, "rationale": "42 reviews across 3 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.2 }, { "id": "96e8e864-c5e6-4289-ac28-63d2e4d73cae", "slug": "motul", "name": "Motul", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.96, "review_count": 705, "product_count": 50, "quality_score": 8.69, "benchmark_rating": 4.91, "benchmark_tier": "segment", "top_segments": [ "Fluids", "Service Kits", "Brake Lines & Fluid", "Driveline" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.7, "weight": 3, "rationale": "Based on 705 verified-buyer reviews across 50 products. Raw average 4.96/5. Compared against a 4.91/5 benchmark drawn from the product segments this brand sells in (Fluids, Service Kits, Brake Lines & Fluid, Driveline). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "705 reviews across 50 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.8, "weight": 1.5, "rationale": "0.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.2 }, { "id": "df1106af-5c37-41ee-a262-4fea72e816ce", "slug": "beatrush", "name": "Beatrush", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.96, "review_count": 27, "product_count": 11, "quality_score": 8.82, "benchmark_rating": 4.87, "benchmark_tier": "segment", "top_segments": [ "Chassis Bracing", "Engine Bay Dress-Up", "Driveline", "Shifters & Bushings" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.8, "weight": 3, "rationale": "Based on 27 verified-buyer reviews across 11 products. Raw average 4.96/5. Compared against a 4.87/5 benchmark drawn from the product segments this brand sells in (Chassis Bracing, Engine Bay Dress-Up, Driveline, Shifters & Bushings). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.7, "weight": 0.75, "rationale": "27 reviews across 11 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.1 }, { "id": "a844df1b-7a4c-4c0a-ace0-41cbae279f6b", "slug": "ebc", "name": "EBC", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.95, "review_count": 40, "product_count": 6, "quality_score": 8.7, "benchmark_rating": 4.88, "benchmark_tier": "segment", "top_segments": [ "Brake Pads" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.7, "weight": 3, "rationale": "Based on 40 verified-buyer reviews across 6 products. Raw average 4.95/5. Compared against a 4.88/5 benchmark drawn from the product segments this brand sells in (Brake Pads). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9, "weight": 0.75, "rationale": "40 reviews across 6 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.1 }, { "id": "7bbf2d93-6166-4dcc-b68e-3f408c3636f0", "slug": "faction-fab", "name": "Faction Fab", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.85, "review_count": 68, "product_count": 27, "quality_score": 8.61, "benchmark_rating": 4.78, "benchmark_tier": "segment", "top_segments": [ "Wheel Hardware", "Coilovers", "Brake Pads", "Exhaust Components" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.6, "weight": 3, "rationale": "Based on 68 verified-buyer reviews across 27 products. Raw average 4.85/5. Compared against a 4.78/5 benchmark drawn from the product segments this brand sells in (Wheel Hardware, Coilovers, Brake Pads, Exhaust Components). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.3, "weight": 0.75, "rationale": "68 reviews across 27 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.1 }, { "id": "d2b518e7-ceac-4fc2-8b66-fdde9071f479", "slug": "hps-performance", "name": "HPS Performance", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.86, "review_count": 63, "product_count": 27, "quality_score": 8.57, "benchmark_rating": 4.79, "benchmark_tier": "segment", "top_segments": [ "Air Intakes", "Cooling", "Engine Bay Dress-Up", "Air Filters" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.6, "weight": 3, "rationale": "Based on 63 verified-buyer reviews across 27 products. Raw average 4.86/5. Compared against a 4.79/5 benchmark drawn from the product segments this brand sells in (Air Intakes, Cooling, Engine Bay Dress-Up, Air Filters). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.2, "weight": 0.75, "rationale": "63 reviews across 27 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.1 }, { "id": "02758c5e-9e06-4520-8087-997a4c0cc75d", "slug": "overtake", "name": "Overtake", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.92, "review_count": 250, "product_count": 93, "quality_score": 8.79, "benchmark_rating": 4.84, "benchmark_tier": "segment", "top_segments": [ "Exhaust Components", "Filters & Service Parts", "Intercoolers", "Differentials" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.8, "weight": 3, "rationale": "Based on 250 verified-buyer reviews across 93 products. Raw average 4.92/5. Compared against a 4.84/5 benchmark drawn from the product segments this brand sells in (Exhaust Components, Filters & Service Parts, Intercoolers, Differentials). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "250 reviews across 93 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.4, "weight": 1.5, "rationale": "1.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.1 }, { "id": "74ddd879-e4e5-4726-85b0-8e0415432995", "slug": "subaru-jdm", "name": "Subaru JDM", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.88, "review_count": 917, "product_count": 123, "quality_score": 8.63, "benchmark_rating": 4.82, "benchmark_tier": "segment", "top_segments": [ "Interior Trim", "Exterior Trim", "Filters & Service Parts", "Body Panels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.6, "weight": 3, "rationale": "Based on 917 verified-buyer reviews across 123 products. Raw average 4.88/5. Compared against a 4.82/5 benchmark drawn from the product segments this brand sells in (Interior Trim, Exterior Trim, Filters & Service Parts, Body Panels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "917 reviews across 123 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.5, "weight": 1.5, "rationale": "1.5% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.1 }, { "id": "deef26aa-f276-4568-8d06-4ee58e27af0c", "slug": "subimods-com", "name": "Subimods.com", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.99, "review_count": 930, "product_count": 1, "quality_score": 8.48, "benchmark_rating": 4.97, "benchmark_tier": "segment", "top_segments": [ "Other" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.5, "weight": 3, "rationale": "Based on 930 verified-buyer reviews across 1 products. Raw average 4.99/5. Compared against a 4.97/5 benchmark drawn from the product segments this brand sells in (Other). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "930 reviews across 1 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9.1 }, { "id": "1b5b8741-e866-4871-9fed-6a37b3bc29dd", "slug": "whiteline", "name": "Whiteline", "website": "https://www.whiteline.com.au", "country": "Australia", "category": "Suspension & chassis", "founded_year": 1992, "tagline": "Bushings, sway bars and chassis control", "summary": "Suspension and chassis manufacturer with an extensive Subaru application list for bars, bushings and alignment hardware.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Limited lifetime warranty on many components.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.89, "review_count": 504, "product_count": 115, "quality_score": 8.47, "benchmark_rating": 4.85, "benchmark_tier": "segment", "top_segments": [ "Sway Bars & Endlinks", "Differentials", "Alignment & Arms", "Shifters & Bushings" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.5, "weight": 3, "rationale": "Based on 504 verified-buyer reviews across 115 products. Raw average 4.89/5. Compared against a 4.85/5 benchmark drawn from the product segments this brand sells in (Sway Bars & Endlinks, Differentials, Alignment & Arms, Shifters & Bushings). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "504 reviews across 115 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.5, "weight": 1.5, "rationale": "1.4% of reviews are 1-2 stars.", "sort_order": 3 }, { "category": "Longevity", "score": 10, "weight": 0.75, "rationale": "34 years in the industry.", "sort_order": 8 } ], "overall": 9.1 }, { "id": "63ff76db-a6ab-42de-8e7b-4357397b8842", "slug": "cobb-tuning", "name": "COBB Tuning", "website": "https://www.cobbtuning.com", "country": "USA", "category": "Tuning & engine management", "founded_year": 1999, "tagline": "Accessport ecosystem and staged packages", "summary": "Best known for the Accessport handheld tuner and staged power packages built around a supported calibration ecosystem.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Limited warranty on electronics; registration required.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.85, "review_count": 2309, "product_count": 255, "quality_score": 8.42, "benchmark_rating": 4.81, "benchmark_tier": "segment", "top_segments": [ "Engine Management", "Air Intakes", "Shifters & Bushings", "Shift Knobs" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 2309 verified-buyer reviews across 255 products. Raw average 4.85/5. Compared against a 4.81/5 benchmark drawn from the product segments this brand sells in (Engine Management, Air Intakes, Shifters & Bushings, Shift Knobs). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "2309 reviews across 255 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.3, "weight": 1.5, "rationale": "2.1% of reviews are 1-2 stars.", "sort_order": 3 }, { "category": "Longevity", "score": 10, "weight": 0.75, "rationale": "27 years in the industry.", "sort_order": 8 } ], "overall": 9 }, { "id": "2eef6ba1-5d52-4be5-a4d6-41cab917f8b9", "slug": "eibach", "name": "Eibach", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.89, "review_count": 38, "product_count": 10, "quality_score": 8.54, "benchmark_rating": 4.84, "benchmark_tier": "parent", "top_segments": [ "Springs", "Alignment & Arms", "Sway Bars & Endlinks", "Wheel Hardware" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.5, "weight": 3, "rationale": "Based on 38 verified-buyer reviews across 10 products. Raw average 4.89/5. Compared against a 4.84/5 benchmark drawn from the broader product groups this brand sells in (Springs, Alignment & Arms, Sway Bars & Endlinks, Wheel Hardware). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.9, "weight": 0.75, "rationale": "38 reviews across 10 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9 }, { "id": "7fd97f5c-fe8e-4325-863f-6b0e4eebcc66", "slug": "grimmspeed", "name": "GrimmSpeed", "website": "https://www.grimmspeed.com", "country": "USA", "category": "Bolt-on performance", "founded_year": 2006, "tagline": "Engineering-forward bolt-ons", "summary": "Subaru-focused engineering shop producing intercoolers, top-mount kits, pulleys and driveability parts with documented testing.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Lifetime warranty on many hard parts.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.87, "review_count": 1664, "product_count": 219, "quality_score": 8.51, "benchmark_rating": 4.82, "benchmark_tier": "segment", "top_segments": [ "Exhaust Components", "Intercoolers", "Engine Bay Dress-Up", "Exterior Trim" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.5, "weight": 3, "rationale": "Based on 1664 verified-buyer reviews across 219 products. Raw average 4.87/5. Compared against a 4.82/5 benchmark drawn from the product segments this brand sells in (Exhaust Components, Intercoolers, Engine Bay Dress-Up, Exterior Trim). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "1664 reviews across 219 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.4, "weight": 1.5, "rationale": "1.6% of reviews are 1-2 stars.", "sort_order": 3 }, { "category": "Longevity", "score": 9, "weight": 0.75, "rationale": "20 years in the industry.", "sort_order": 8 } ], "overall": 9 }, { "id": "86c74a7e-4017-4426-9af2-599c2383abb8", "slug": "isc", "name": "ISC", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.84, "review_count": 74, "product_count": 25, "quality_score": 8.64, "benchmark_rating": 4.76, "benchmark_tier": "segment", "top_segments": [ "Coilovers", "Wheel Hardware", "Alignment & Arms", "Wheels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.6, "weight": 3, "rationale": "Based on 74 verified-buyer reviews across 25 products. Raw average 4.84/5. Compared against a 4.76/5 benchmark drawn from the product segments this brand sells in (Coilovers, Wheel Hardware, Alignment & Arms, Wheels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.4, "weight": 0.75, "rationale": "74 reviews across 25 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.5, "weight": 1.5, "rationale": "1.4% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 9 }, { "id": "1f85024f-7878-4535-b698-cd27767cc148", "slug": "arp", "name": "ARP", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.88, "review_count": 86, "product_count": 8, "quality_score": 8.58, "benchmark_rating": 4.82, "benchmark_tier": "segment", "top_segments": [ "Wheels", "Engine Components" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.6, "weight": 3, "rationale": "Based on 86 verified-buyer reviews across 8 products. Raw average 4.88/5. Compared against a 4.82/5 benchmark drawn from the product segments this brand sells in (Wheels, Engine Components). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.5, "weight": 0.75, "rationale": "86 reviews across 8 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.2, "weight": 1.5, "rationale": "2.3% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "627ed8c5-f729-41d1-8113-0127dd0596c9", "slug": "awe", "name": "AWE", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.85, "review_count": 326, "product_count": 22, "quality_score": 8.32, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Cat-Back Exhaust", "Axle-Back Exhaust" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 326 verified-buyer reviews across 22 products. Raw average 4.85/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Cat-Back Exhaust, Axle-Back Exhaust). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "326 reviews across 22 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.4, "weight": 1.5, "rationale": "1.8% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "8db36c33-2503-4e8f-b958-10d9581eaf54", "slug": "billetworkz", "name": "Billetworkz", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.85, "review_count": 645, "product_count": 70, "quality_score": 8.32, "benchmark_rating": 4.82, "benchmark_tier": "segment", "top_segments": [ "Shift Knobs", "Shifters & Bushings", "Interior Trim", "Engine Bay Dress-Up" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 645 verified-buyer reviews across 70 products. Raw average 4.85/5. Compared against a 4.82/5 benchmark drawn from the product segments this brand sells in (Shift Knobs, Shifters & Bushings, Interior Trim, Engine Bay Dress-Up). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "645 reviews across 70 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.4, "weight": 1.5, "rationale": "1.9% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "10e5860d-e0b0-4336-bec4-44f5e199d3cc", "slug": "blitz", "name": "Blitz", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.89, "review_count": 105, "product_count": 27, "quality_score": 8.39, "benchmark_rating": 4.86, "benchmark_tier": "segment", "top_segments": [ "Chassis Bracing", "Engine Bay Dress-Up", "Tools", "Filters & Service Parts" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 105 verified-buyer reviews across 27 products. Raw average 4.89/5. Compared against a 4.86/5 benchmark drawn from the product segments this brand sells in (Chassis Bracing, Engine Bay Dress-Up, Tools, Filters & Service Parts). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.6, "weight": 0.75, "rationale": "105 reviews across 27 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.7, "weight": 1.5, "rationale": "1.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "23b17fbe-7729-4e33-93d3-bb3b141e9a4b", "slug": "enkei-tuning", "name": "Enkei Tuning", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.82, "review_count": 102, "product_count": 19, "quality_score": 8.65, "benchmark_rating": 4.74, "benchmark_tier": "segment", "top_segments": [ "Wheel Hardware", "Wheels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.7, "weight": 3, "rationale": "Based on 102 verified-buyer reviews across 19 products. Raw average 4.82/5. Compared against a 4.74/5 benchmark drawn from the product segments this brand sells in (Wheel Hardware, Wheels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.6, "weight": 0.75, "rationale": "102 reviews across 19 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9, "weight": 1.5, "rationale": "2.9% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "3d4431a8-5aa2-4b4e-854f-0e7c3175a331", "slug": "ets", "name": "ETS", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.84, "review_count": 451, "product_count": 58, "quality_score": 8.29, "benchmark_rating": 4.81, "benchmark_tier": "segment", "top_segments": [ "Axle-Back Exhaust", "Air Intakes", "Cat-Back Exhaust", "Intercoolers" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 451 verified-buyer reviews across 58 products. Raw average 4.84/5. Compared against a 4.81/5 benchmark drawn from the product segments this brand sells in (Axle-Back Exhaust, Air Intakes, Cat-Back Exhaust, Intercoolers). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "451 reviews across 58 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.4, "weight": 1.5, "rationale": "1.8% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "66700019-0755-46c8-afe5-2946534ec3b5", "slug": "fumoto", "name": "Fumoto", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.88, "review_count": 252, "product_count": 7, "quality_score": 8.37, "benchmark_rating": 4.85, "benchmark_tier": "segment", "top_segments": [ "Service Kits" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 252 verified-buyer reviews across 7 products. Raw average 4.88/5. Compared against a 4.85/5 benchmark drawn from the product segments this brand sells in (Service Kits). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "252 reviews across 7 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.3, "weight": 1.5, "rationale": "2.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "60bc73ca-324d-4360-969b-026490b35997", "slug": "hawk", "name": "Hawk", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.89, "review_count": 184, "product_count": 37, "quality_score": 8.22, "benchmark_rating": 4.88, "benchmark_tier": "segment", "top_segments": [ "Brake Pads", "Brake Rotors" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.2, "weight": 3, "rationale": "Based on 184 verified-buyer reviews across 37 products. Raw average 4.89/5. Compared against a 4.88/5 benchmark drawn from the product segments this brand sells in (Brake Pads, Brake Rotors). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "184 reviews across 37 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.6, "weight": 1.5, "rationale": "1.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "f198b3f6-77d9-4e54-90c8-919b98f57cab", "slug": "kartboy", "name": "Kartboy", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.87, "review_count": 208, "product_count": 46, "quality_score": 8.29, "benchmark_rating": 4.85, "benchmark_tier": "segment", "top_segments": [ "Shifters & Bushings", "Sway Bars & Endlinks", "Exhaust Components", "Shift Knobs" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 208 verified-buyer reviews across 46 products. Raw average 4.87/5. Compared against a 4.85/5 benchmark drawn from the product segments this brand sells in (Shifters & Bushings, Sway Bars & Endlinks, Exhaust Components, Shift Knobs). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "208 reviews across 46 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.5, "weight": 1.5, "rationale": "1.4% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "d9f3f076-63ea-4f7e-8ff9-91af884d643e", "slug": "nameless-performance", "name": "Nameless Performance", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.87, "review_count": 232, "product_count": 91, "quality_score": 8.43, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Axle-Back Exhaust", "Chassis Bracing", "Exhaust Components", "Cat-Back Exhaust" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 232 verified-buyer reviews across 91 products. Raw average 4.87/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Axle-Back Exhaust, Chassis Bracing, Exhaust Components, Cat-Back Exhaust). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "232 reviews across 91 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.4, "weight": 1.5, "rationale": "1.7% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "681023b0-bc31-4d7a-839d-b6ca7ef23c77", "slug": "perrin-performance", "name": "PERRIN Performance", "website": "https://www.perrinperformance.com", "country": "USA", "category": "Bolt-on performance", "founded_year": 1998, "tagline": "Broad Subaru bolt-on catalog", "summary": "Wide catalog of Subaru bolt-ons from intakes to suspension links, with consistent fitment documentation.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Limited lifetime warranty on most parts.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.83, "review_count": 2627, "product_count": 378, "quality_score": 8.25, "benchmark_rating": 4.81, "benchmark_tier": "segment", "top_segments": [ "Shifters & Bushings", "Engine Bay Dress-Up", "Exterior Trim", "Air Intakes" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 2627 verified-buyer reviews across 378 products. Raw average 4.83/5. Compared against a 4.81/5 benchmark drawn from the product segments this brand sells in (Shifters & Bushings, Engine Bay Dress-Up, Exterior Trim, Air Intakes). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "2627 reviews across 378 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.2, "weight": 1.5, "rationale": "2.4% of reviews are 1-2 stars.", "sort_order": 3 }, { "category": "Reported issues", "score": 8.5, "weight": 1.5, "rationale": "1 approved community issue report(s).", "sort_order": 4 }, { "category": "Longevity", "score": 10, "weight": 0.75, "rationale": "28 years in the industry.", "sort_order": 8 } ], "overall": 8.9 }, { "id": "00e1731b-ce03-421e-a59c-561fdb47045d", "slug": "sparco", "name": "Sparco", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.84, "review_count": 44, "product_count": 23, "quality_score": 8.43, "benchmark_rating": 4.79, "benchmark_tier": "parent", "top_segments": [ "Seats & Harnesses", "Steering & Pedals", "Wheels", "Apparel" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 44 verified-buyer reviews across 23 products. Raw average 4.84/5. Compared against a 4.79/5 benchmark drawn from the broader product groups this brand sells in (Seats & Harnesses, Steering & Pedals, Wheels, Apparel). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9, "weight": 0.75, "rationale": "44 reviews across 23 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.9 }, { "id": "d60207a4-d7c9-4f60-8b25-e4f380478aec", "slug": "cusco", "name": "Cusco", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.88, "review_count": 658, "product_count": 124, "quality_score": 8.34, "benchmark_rating": 4.85, "benchmark_tier": "segment", "top_segments": [ "Chassis Bracing", "Sway Bars & Endlinks", "Differentials", "Service Kits" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 658 verified-buyer reviews across 124 products. Raw average 4.88/5. Compared against a 4.85/5 benchmark drawn from the product segments this brand sells in (Chassis Bracing, Sway Bars & Endlinks, Differentials, Service Kits). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "658 reviews across 124 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.3, "weight": 1.5, "rationale": "2.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.8 }, { "id": "b50a482c-d972-4944-89b0-f3aecf29583c", "slug": "gram-lights", "name": "Gram Lights", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.84, "review_count": 137, "product_count": 42, "quality_score": 8.6, "benchmark_rating": 4.77, "benchmark_tier": "segment", "top_segments": [ "Wheels", "Stickers & Vinyl" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.6, "weight": 3, "rationale": "Based on 137 verified-buyer reviews across 42 products. Raw average 4.84/5. Compared against a 4.77/5 benchmark drawn from the product segments this brand sells in (Wheels, Stickers & Vinyl). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.8, "weight": 0.75, "rationale": "137 reviews across 42 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.7, "weight": 1.5, "rationale": "3.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.8 }, { "id": "3ee9b5e0-23fc-410f-b4cb-7e1fae223421", "slug": "iag-performance", "name": "IAG Performance", "website": "https://www.iagperformance.com", "country": "USA", "category": "Engine internals & built motors", "founded_year": 2006, "tagline": "Built short blocks and oiling solutions", "summary": "Engine builder and parts manufacturer focused on EJ and FA short blocks, oiling system upgrades and race-oriented hardware.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Warranty varies by engine package tier.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.81, "review_count": 659, "product_count": 150, "quality_score": 8.27, "benchmark_rating": 4.78, "benchmark_tier": "segment", "top_segments": [ "Air Oil Separators", "Engine Internals", "Hardware & Fittings", "Intake Manifolds" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 659 verified-buyer reviews across 150 products. Raw average 4.81/5. Compared against a 4.78/5 benchmark drawn from the product segments this brand sells in (Air Oil Separators, Engine Internals, Hardware & Fittings, Intake Manifolds). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "659 reviews across 150 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9, "weight": 1.5, "rationale": "2.7% of reviews are 1-2 stars.", "sort_order": 3 }, { "category": "Longevity", "score": 9, "weight": 0.75, "rationale": "20 years in the industry.", "sort_order": 8 } ], "overall": 8.8 }, { "id": "88630479-d37c-4c78-b770-f927395cc728", "slug": "vibrant", "name": "Vibrant", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.9, "review_count": 62, "product_count": 9, "quality_score": 8.4, "benchmark_rating": 4.87, "benchmark_tier": "segment", "top_segments": [ "Exhaust Components", "Hardware & Fittings", "Tools" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 62 verified-buyer reviews across 9 products. Raw average 4.90/5. Compared against a 4.87/5 benchmark drawn from the product segments this brand sells in (Exhaust Components, Hardware & Fittings, Tools). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.2, "weight": 0.75, "rationale": "62 reviews across 9 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.4, "weight": 1.5, "rationale": "1.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.8 }, { "id": "97a21157-6d98-4971-aa56-db586620a7dd", "slug": "volk", "name": "Volk", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.81, "review_count": 85, "product_count": 21, "quality_score": 8.54, "benchmark_rating": 4.74, "benchmark_tier": "segment", "top_segments": [ "Wheel Hardware", "Wheels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.5, "weight": 3, "rationale": "Based on 85 verified-buyer reviews across 21 products. Raw average 4.81/5. Compared against a 4.74/5 benchmark drawn from the product segments this brand sells in (Wheel Hardware, Wheels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.4, "weight": 0.75, "rationale": "85 reviews across 21 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.2, "weight": 1.5, "rationale": "2.4% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.8 }, { "id": "e94eb216-c18e-420a-97c4-6150f509194a", "slug": "brembo", "name": "Brembo", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.87, "review_count": 63, "product_count": 15, "quality_score": 8.28, "benchmark_rating": 4.85, "benchmark_tier": "segment", "top_segments": [ "Brake Pads", "Brake Rotors" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 63 verified-buyer reviews across 15 products. Raw average 4.87/5. Compared against a 4.85/5 benchmark drawn from the product segments this brand sells in (Brake Pads, Brake Rotors). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.2, "weight": 0.75, "rationale": "63 reviews across 15 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.4, "weight": 1.5, "rationale": "1.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "205e81b8-7ac4-456d-8b94-418484639ee6", "slug": "driven-media", "name": "Driven Media", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.79, "review_count": 503, "product_count": 34, "quality_score": 8.4, "benchmark_rating": 4.73, "benchmark_tier": "segment", "top_segments": [ "Exterior Lighting", "Tail Lights", "Interior Trim", "Body Panels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 503 verified-buyer reviews across 34 products. Raw average 4.79/5. Compared against a 4.73/5 benchmark drawn from the product segments this brand sells in (Exterior Lighting, Tail Lights, Interior Trim, Body Panels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "503 reviews across 34 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.8, "weight": 1.5, "rationale": "3.4% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "0b9a87fd-dccf-4f4a-a814-e9c78f1e08f6", "slug": "gktech", "name": "GKTECH", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.79, "review_count": 43, "product_count": 19, "quality_score": 8.4, "benchmark_rating": 4.73, "benchmark_tier": "segment", "top_segments": [ "Wheel Hardware", "Clutches", "Alignment & Arms", "Shifters & Bushings" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 43 verified-buyer reviews across 19 products. Raw average 4.79/5. Compared against a 4.73/5 benchmark drawn from the product segments this brand sells in (Wheel Hardware, Clutches, Alignment & Arms, Shifters & Bushings). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9, "weight": 0.75, "rationale": "43 reviews across 19 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.2, "weight": 1.5, "rationale": "2.3% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "afdcfaf6-c070-4c55-b8cd-f67cd20ad7f5", "slug": "injector-dynamics", "name": "Injector Dynamics", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.83, "review_count": 35, "product_count": 5, "quality_score": 8.54, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Fuel System" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.5, "weight": 3, "rationale": "Based on 35 verified-buyer reviews across 5 products. Raw average 4.83/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Fuel System). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.9, "weight": 0.75, "rationale": "35 reviews across 5 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9, "weight": 1.5, "rationale": "2.9% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "7eaca39d-8b30-4519-8a95-a097317baeed", "slug": "k-n", "name": "K&N", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.86, "review_count": 78, "product_count": 10, "quality_score": 8.28, "benchmark_rating": 4.84, "benchmark_tier": "segment", "top_segments": [ "Air Filters", "Air Intakes", "Filters & Service Parts" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 78 verified-buyer reviews across 10 products. Raw average 4.86/5. Compared against a 4.84/5 benchmark drawn from the product segments this brand sells in (Air Filters, Air Intakes, Filters & Service Parts). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.4, "weight": 0.75, "rationale": "78 reviews across 10 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.1, "weight": 1.5, "rationale": "2.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "db338317-9168-4bb5-87cb-1075b808c05a", "slug": "magnaflow", "name": "Magnaflow", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.85, "review_count": 13, "product_count": 4, "quality_score": 8.2, "benchmark_rating": 4.82, "benchmark_tier": "segment", "top_segments": [ "Cat-Back Exhaust", "Axle-Back Exhaust" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.2, "weight": 3, "rationale": "Based on 13 verified-buyer reviews across 4 products. Raw average 4.85/5. Compared against a 4.82/5 benchmark drawn from the product segments this brand sells in (Cat-Back Exhaust, Axle-Back Exhaust). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.2, "weight": 0.75, "rationale": "13 reviews across 4 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "fb067a49-cc2e-453a-b4b4-b7d487d1e053", "slug": "ohlins", "name": "Ohlins", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 5, "review_count": 7, "product_count": 2, "quality_score": 8.93, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Coilovers" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.9, "weight": 3, "rationale": "Based on 7 verified-buyer reviews across 2 products. Raw average 5.00/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Coilovers). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 7.9, "weight": 0.75, "rationale": "7 reviews across 2 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 } ], "overall": 8.7 }, { "id": "fea6b299-e60c-4edc-b972-abfec3761f7e", "slug": "rally-armor", "name": "Rally Armor", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.79, "review_count": 456, "product_count": 88, "quality_score": 8.33, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Exterior Protection" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 456 verified-buyer reviews across 88 products. Raw average 4.79/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Exterior Protection). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "456 reviews across 88 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9, "weight": 1.5, "rationale": "2.9% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "ea3ed7dc-71b2-419c-9bfe-16f3253651dc", "slug": "remark", "name": "Remark", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.83, "review_count": 363, "product_count": 64, "quality_score": 8.08, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Axle-Back Exhaust", "Exhaust Components", "Cat-Back Exhaust" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.1, "weight": 3, "rationale": "Based on 363 verified-buyer reviews across 64 products. Raw average 4.83/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Axle-Back Exhaust, Exhaust Components, Cat-Back Exhaust). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "363 reviews across 64 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.3, "weight": 1.5, "rationale": "1.9% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "e9c38943-2c52-4302-9200-c7c7991ecd61", "slug": "turbosmart", "name": "Turbosmart", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.82, "review_count": 141, "product_count": 26, "quality_score": 8.39, "benchmark_rating": 4.77, "benchmark_tier": "segment", "top_segments": [ "Blow Off Valves", "Wastegates", "Hardware & Fittings", "Boost Control" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 141 verified-buyer reviews across 26 products. Raw average 4.82/5. Compared against a 4.77/5 benchmark drawn from the product segments this brand sells in (Blow Off Valves, Wastegates, Hardware & Fittings, Boost Control). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.8, "weight": 0.75, "rationale": "141 reviews across 26 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.8, "weight": 1.5, "rationale": "3.5% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "c62dc4a1-0ccc-42e6-a577-a82afed2436f", "slug": "verus", "name": "Verus", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.78, "review_count": 255, "product_count": 75, "quality_score": 8.27, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Clutches", "Engine Bay Dress-Up", "Body Panels", "Steering & Pedals" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.3, "weight": 3, "rationale": "Based on 255 verified-buyer reviews across 75 products. Raw average 4.78/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Clutches, Engine Bay Dress-Up, Body Panels, Steering & Pedals). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "255 reviews across 75 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9, "weight": 1.5, "rationale": "2.7% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.7 }, { "id": "ab457a2c-add8-4a6a-82ba-9de3e442ffec", "slug": "forced-performance", "name": "Forced Performance", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.86, "review_count": 28, "product_count": 11, "quality_score": 8.43, "benchmark_rating": 4.8, "benchmark_tier": "segment", "top_segments": [ "Turbochargers", "Hardware & Fittings", "Fluids" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.4, "weight": 3, "rationale": "Based on 28 verified-buyer reviews across 11 products. Raw average 4.86/5. Compared against a 4.80/5 benchmark drawn from the product segments this brand sells in (Turbochargers, Hardware & Fittings, Fluids). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.7, "weight": 0.75, "rationale": "28 reviews across 11 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.8, "weight": 1.5, "rationale": "3.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.6 }, { "id": "eb301c39-302e-4efb-b029-7592e48f9a8f", "slug": "hks", "name": "HKS", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.84, "review_count": 309, "product_count": 92, "quality_score": 8.13, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Engine Bay Dress-Up", "Blow Off Valves", "Cat-Back Exhaust", "Merchandise" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.1, "weight": 3, "rationale": "Based on 309 verified-buyer reviews across 92 products. Raw average 4.84/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Engine Bay Dress-Up, Blow Off Valves, Cat-Back Exhaust, Merchandise). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "309 reviews across 92 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.9, "weight": 1.5, "rationale": "3.2% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.6 }, { "id": "0371fc32-7999-43d6-bfc5-cfe86b35944b", "slug": "invidia", "name": "Invidia", "website": "https://www.invidiausa.com", "country": "Taiwan", "category": "Exhaust", "founded_year": 1996, "tagline": "Volume exhaust manufacturer", "summary": "High-volume exhaust manufacturer with a long-standing Subaru presence across catback and downpipe categories.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Limited warranty against defects.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.78, "review_count": 211, "product_count": 50, "quality_score": 7.6, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Cat-Back Exhaust", "Exhaust Components" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.6, "weight": 3, "rationale": "Based on 211 verified-buyer reviews across 50 products. Raw average 4.78/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Cat-Back Exhaust, Exhaust Components). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "211 reviews across 50 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.2, "weight": 1.5, "rationale": "2.4% of reviews are 1-2 stars.", "sort_order": 3 }, { "category": "Reported issues", "score": 8.5, "weight": 1.5, "rationale": "1 approved community issue report(s).", "sort_order": 4 }, { "category": "Longevity", "score": 10, "weight": 0.75, "rationale": "30 years in the industry.", "sort_order": 8 } ], "overall": 8.6 }, { "id": "02df8e8d-0f1b-4481-89a0-4ea5f1a84bc2", "slug": "killer-b-motorsport", "name": "Killer B Motorsport", "website": "https://www.killerbmotorsport.com", "country": "USA", "category": "Oiling & engine hardware", "founded_year": 2008, "tagline": "Oil pickups, pans and holy headers", "summary": "Specialist manufacturer of Subaru oiling components and equal-length headers, popular in high-power builds.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Limited warranty on manufacturing defects.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 0, "review_count": 0, "product_count": 0, "quality_score": null, "benchmark_rating": null, "benchmark_tier": null, "top_segments": [], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Longevity", "score": 8.6, "weight": 0.75, "rationale": "18 years in the industry.", "sort_order": 8 } ], "overall": 8.6 }, { "id": "78c7cbc6-0c2f-4ba2-9da0-7b2bae928d62", "slug": "turbo-xs", "name": "Turbo XS", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.84, "review_count": 121, "product_count": 36, "quality_score": 8.14, "benchmark_rating": 4.84, "benchmark_tier": "segment", "top_segments": [ "Exhaust Components", "Exterior Trim", "Blow Off Valves", "Intercoolers" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.1, "weight": 3, "rationale": "Based on 121 verified-buyer reviews across 36 products. Raw average 4.84/5. Compared against a 4.84/5 benchmark drawn from the product segments this brand sells in (Exhaust Components, Exterior Trim, Blow Off Valves, Intercoolers). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.7, "weight": 0.75, "rationale": "121 reviews across 36 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.1, "weight": 1.5, "rationale": "2.5% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.6 }, { "id": "291de0c6-d9d8-430d-b70e-2ba9499f9202", "slug": "company23", "name": "Company23", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.83, "review_count": 354, "product_count": 65, "quality_score": 7.86, "benchmark_rating": 4.86, "benchmark_tier": "segment", "top_segments": [ "Tools", "Boost Control", "Service Kits", "Cooling" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.9, "weight": 3, "rationale": "Based on 354 verified-buyer reviews across 65 products. Raw average 4.83/5. Compared against a 4.86/5 benchmark drawn from the product segments this brand sells in (Tools, Boost Control, Service Kits, Cooling). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "354 reviews across 65 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.9, "weight": 1.5, "rationale": "3.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.5 }, { "id": "4dd01a08-23df-42e8-9d00-28045aca3a71", "slug": "dba", "name": "DBA", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.83, "review_count": 144, "product_count": 40, "quality_score": 8.01, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Brake Rotors", "Brake Pads" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8, "weight": 3, "rationale": "Based on 144 verified-buyer reviews across 40 products. Raw average 4.83/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Brake Rotors, Brake Pads). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.8, "weight": 0.75, "rationale": "144 reviews across 40 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.8, "weight": 1.5, "rationale": "3.5% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.5 }, { "id": "10388956-2c99-4757-a90e-9f4b1d651d82", "slug": "ngk", "name": "NGK", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.84, "review_count": 201, "product_count": 6, "quality_score": 8, "benchmark_rating": 4.85, "benchmark_tier": "segment", "top_segments": [ "Service Kits" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8, "weight": 3, "rationale": "Based on 201 verified-buyer reviews across 6 products. Raw average 4.84/5. Compared against a 4.85/5 benchmark drawn from the product segments this brand sells in (Service Kits). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "201 reviews across 6 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.8, "weight": 1.5, "rationale": "3.5% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.5 }, { "id": "838e5695-c8fe-421f-ae8f-0db2211318a0", "slug": "spc-performance", "name": "SPC Performance", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.82, "review_count": 34, "product_count": 3, "quality_score": 8.01, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Alignment & Arms" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8, "weight": 3, "rationale": "Based on 34 verified-buyer reviews across 3 products. Raw average 4.82/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Alignment & Arms). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.9, "weight": 0.75, "rationale": "34 reviews across 3 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9, "weight": 1.5, "rationale": "2.9% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.4 }, { "id": "dd0c0643-ed69-449b-8d91-7470d533873c", "slug": "tomei", "name": "Tomei Powered", "website": "https://www.tomeiusa.com", "country": "Japan", "category": "Engine & exhaust", "founded_year": 1968, "tagline": "JDM engineering heritage", "summary": "Japanese motorsport manufacturer producing camshafts, valvetrain, exhausts and engine components with a motorsport lineage.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Manufacturer defect warranty via distributor.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.79, "review_count": 307, "product_count": 55, "quality_score": 7.59, "benchmark_rating": 4.84, "benchmark_tier": "segment", "top_segments": [ "Cat-Back Exhaust", "Merchandise", "Exhaust Components", "Turbochargers" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.6, "weight": 3, "rationale": "Based on 307 verified-buyer reviews across 55 products. Raw average 4.79/5. Compared against a 4.84/5 benchmark drawn from the product segments this brand sells in (Cat-Back Exhaust, Merchandise, Exhaust Components, Turbochargers). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "307 reviews across 55 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.5, "weight": 1.5, "rationale": "4.2% of reviews are 1-2 stars.", "sort_order": 3 }, { "category": "Longevity", "score": 10, "weight": 0.75, "rationale": "58 years in the industry.", "sort_order": 8 } ], "overall": 8.4 }, { "id": "d5a6202e-1ebb-4591-8608-ebbba37633f7", "slug": "deatschwerks", "name": "Deatschwerks", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.76, "review_count": 83, "product_count": 25, "quality_score": 8.04, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Fuel System" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8, "weight": 3, "rationale": "Based on 83 verified-buyer reviews across 25 products. Raw average 4.76/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Fuel System). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.4, "weight": 0.75, "rationale": "83 reviews across 25 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.3, "weight": 1.5, "rationale": "4.8% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.3 }, { "id": "c5adc90a-a367-4506-845f-cd082bcb7c8f", "slug": "radium-engineering", "name": "Radium Engineering", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.74, "review_count": 142, "product_count": 38, "quality_score": 7.83, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Fuel System", "Air Oil Separators", "Brake Hardware", "Engine Components" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.8, "weight": 3, "rationale": "Based on 142 verified-buyer reviews across 38 products. Raw average 4.74/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Fuel System, Air Oil Separators, Brake Hardware, Engine Components). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.8, "weight": 0.75, "rationale": "142 reviews across 38 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.5, "weight": 1.5, "rationale": "4.2% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.3 }, { "id": "b7f777b8-bc86-4f0b-9c9f-627e2d9351dc", "slug": "borla", "name": "Borla", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.8, "review_count": 49, "product_count": 13, "quality_score": 7.84, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Cat-Back Exhaust", "Axle-Back Exhaust" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.8, "weight": 3, "rationale": "Based on 49 verified-buyer reviews across 13 products. Raw average 4.80/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Cat-Back Exhaust, Axle-Back Exhaust). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.1, "weight": 0.75, "rationale": "49 reviews across 13 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.6, "weight": 1.5, "rationale": "4.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.2 }, { "id": "5aa6359c-b1dc-46fa-926d-4adfe403224b", "slug": "brembo-oe", "name": "Brembo OE", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.84, "review_count": 19, "product_count": 4, "quality_score": 8.19, "benchmark_rating": 4.82, "benchmark_tier": "parent", "top_segments": [ "Calipers & Big Brakes" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.2, "weight": 3, "rationale": "Based on 19 verified-buyer reviews across 4 products. Raw average 4.84/5. Compared against a 4.82/5 benchmark drawn from the broader product groups this brand sells in (Calipers & Big Brakes). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.5, "weight": 0.75, "rationale": "19 reviews across 4 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.2, "weight": 1.5, "rationale": "5.3% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.2 }, { "id": "4e45e33b-1e3a-42aa-a1bb-43e468a5e9e3", "slug": "fortune-auto", "name": "Fortune Auto", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.75, "review_count": 20, "product_count": 6, "quality_score": 7.95, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Coilovers" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8, "weight": 3, "rationale": "Based on 20 verified-buyer reviews across 6 products. Raw average 4.75/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Coilovers). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.5, "weight": 0.75, "rationale": "20 reviews across 6 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.3, "weight": 1.5, "rationale": "5.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.2 }, { "id": "a2607dc0-6020-44ff-8b9e-ebd8fb45df1e", "slug": "molded-innovations", "name": "Molded Innovations", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.7, "review_count": 1662, "product_count": 158, "quality_score": 7.6, "benchmark_rating": 4.74, "benchmark_tier": "segment", "top_segments": [ "Exterior Lighting", "Tail Lights", "Interior Trim", "Wheels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.6, "weight": 3, "rationale": "Based on 1662 verified-buyer reviews across 158 products. Raw average 4.70/5. Compared against a 4.74/5 benchmark drawn from the product segments this brand sells in (Exterior Lighting, Tail Lights, Interior Trim, Wheels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "1662 reviews across 158 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.4, "weight": 1.5, "rationale": "4.5% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.2 }, { "id": "759c7f19-48ae-4be4-ba09-36cace121149", "slug": "ams-performance", "name": "AMS Performance", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.77, "review_count": 91, "product_count": 17, "quality_score": 7.58, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Shift Knobs", "Engine Bay Dress-Up", "Air Intakes", "Intercoolers" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.6, "weight": 3, "rationale": "Based on 91 verified-buyer reviews across 17 products. Raw average 4.77/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Shift Knobs, Engine Bay Dress-Up, Air Intakes, Intercoolers). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.5, "weight": 0.75, "rationale": "91 reviews across 17 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.5, "weight": 1.5, "rationale": "4.4% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.1 }, { "id": "8266217c-72f5-41b6-a667-ac5e660c86fb", "slug": "exedy", "name": "Exedy", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.69, "review_count": 52, "product_count": 18, "quality_score": 7.91, "benchmark_rating": 4.68, "benchmark_tier": "segment", "top_segments": [ "Clutches", "Flywheels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.9, "weight": 3, "rationale": "Based on 52 verified-buyer reviews across 18 products. Raw average 4.69/5. Compared against a 4.68/5 benchmark drawn from the product segments this brand sells in (Clutches, Flywheels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.1, "weight": 0.75, "rationale": "52 reviews across 18 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8, "weight": 1.5, "rationale": "5.8% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.1 }, { "id": "8b840bc1-ba68-485c-a976-deccdb7cfcab", "slug": "fuel-injector-clinic", "name": "Fuel Injector Clinic", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.78, "review_count": 18, "product_count": 7, "quality_score": 8.13, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Fuel System" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.1, "weight": 3, "rationale": "Based on 18 verified-buyer reviews across 7 products. Raw average 4.78/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Fuel System). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.4, "weight": 0.75, "rationale": "18 reviews across 7 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.1, "weight": 1.5, "rationale": "5.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.1 }, { "id": "dab6e593-45fd-4046-9564-071c0b0149f0", "slug": "killer-b-motorsports", "name": "Killer B Motorsports", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.74, "review_count": 195, "product_count": 41, "quality_score": 7.72, "benchmark_rating": 4.77, "benchmark_tier": "segment", "top_segments": [ "Engine Internals", "Cooling", "Turbochargers", "Exhaust Components" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.7, "weight": 3, "rationale": "Based on 195 verified-buyer reviews across 41 products. Raw average 4.74/5. Compared against a 4.77/5 benchmark drawn from the product segments this brand sells in (Engine Internals, Cooling, Turbochargers, Exhaust Components). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "195 reviews across 41 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8, "weight": 1.5, "rationale": "5.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.1 }, { "id": "6adbb3e7-3b8f-4c7d-8ae8-098e7d39929a", "slug": "mbrp", "name": "MBRP", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.72, "review_count": 99, "product_count": 21, "quality_score": 7.18, "benchmark_rating": 4.82, "benchmark_tier": "segment", "top_segments": [ "Axle-Back Exhaust", "Cat-Back Exhaust" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.2, "weight": 3, "rationale": "Based on 99 verified-buyer reviews across 21 products. Raw average 4.72/5. Compared against a 4.82/5 benchmark drawn from the product segments this brand sells in (Axle-Back Exhaust, Cat-Back Exhaust). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.5, "weight": 0.75, "rationale": "99 reviews across 21 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.3, "weight": 1.5, "rationale": "2.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.1 }, { "id": "f784d942-58b3-40c7-b9b2-8acced78aaa9", "slug": "prosport", "name": "Prosport", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.71, "review_count": 98, "product_count": 38, "quality_score": 7.36, "benchmark_rating": 4.79, "benchmark_tier": "segment", "top_segments": [ "Gauges", "Hardware & Fittings", "Body Panels", "Engine Components" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.4, "weight": 3, "rationale": "Based on 98 verified-buyer reviews across 38 products. Raw average 4.71/5. Compared against a 4.79/5 benchmark drawn from the product segments this brand sells in (Gauges, Hardware & Fittings, Body Panels, Engine Components). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.5, "weight": 0.75, "rationale": "98 reviews across 38 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.9, "weight": 1.5, "rationale": "3.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.1 }, { "id": "32807cbd-1b1e-4973-9213-905415ab9618", "slug": "spl", "name": "SPL", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.81, "review_count": 21, "product_count": 8, "quality_score": 7.92, "benchmark_rating": 4.84, "benchmark_tier": "segment", "top_segments": [ "Alignment & Arms", "Sway Bars & Endlinks", "Tools" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.9, "weight": 3, "rationale": "Based on 21 verified-buyer reviews across 8 products. Raw average 4.81/5. Compared against a 4.84/5 benchmark drawn from the product segments this brand sells in (Alignment & Arms, Sway Bars & Endlinks, Tools). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.5, "weight": 0.75, "rationale": "21 reviews across 8 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.3, "weight": 1.5, "rationale": "4.8% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.1 }, { "id": "842e18a7-18ae-4b02-afa5-cb74276b862a", "slug": "super-pro", "name": "Super Pro", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.78, "review_count": 74, "product_count": 26, "quality_score": 7.63, "benchmark_rating": 4.84, "benchmark_tier": "segment", "top_segments": [ "Alignment & Arms", "Bushings & Mounts", "Differentials", "Sway Bars & Endlinks" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.6, "weight": 3, "rationale": "Based on 74 verified-buyer reviews across 26 products. Raw average 4.78/5. Compared against a 4.84/5 benchmark drawn from the product segments this brand sells in (Alignment & Arms, Bushings & Mounts, Differentials, Sway Bars & Endlinks). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.4, "weight": 0.75, "rationale": "74 reviews across 26 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.6, "weight": 1.5, "rationale": "4.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8.1 }, { "id": "8c548943-dd0d-4208-b493-4795e9777cd3", "slug": "aeromotive", "name": "Aeromotive", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.79, "review_count": 14, "product_count": 6, "quality_score": 8.15, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Fuel System" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 8.2, "weight": 3, "rationale": "Based on 14 verified-buyer reviews across 6 products. Raw average 4.79/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Fuel System). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.3, "weight": 0.75, "rationale": "14 reviews across 6 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.5, "weight": 1.5, "rationale": "7.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8 }, { "id": "d6495ccb-a07d-46af-a33b-73ec68233f2c", "slug": "bc-racing", "name": "BC Racing", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.71, "review_count": 179, "product_count": 5, "quality_score": 7.58, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Coilovers", "Suspension Control" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.6, "weight": 3, "rationale": "Based on 179 verified-buyer reviews across 5 products. Raw average 4.71/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Coilovers, Suspension Control). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.9, "weight": 0.75, "rationale": "179 reviews across 5 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8, "weight": 1.5, "rationale": "5.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8 }, { "id": "86fda111-8f47-4016-bf9e-310b79b283b9", "slug": "course-motorsports", "name": "Course Motorsports", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.7, "review_count": 43, "product_count": 4, "quality_score": 7.22, "benchmark_rating": 4.8, "benchmark_tier": "segment", "top_segments": [ "Interior Accessories" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.2, "weight": 3, "rationale": "Based on 43 verified-buyer reviews across 4 products. Raw average 4.70/5. Compared against a 4.80/5 benchmark drawn from the product segments this brand sells in (Interior Accessories). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9, "weight": 0.75, "rationale": "43 reviews across 4 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 9.2, "weight": 1.5, "rationale": "2.3% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8 }, { "id": "3b8499ac-bc9c-4546-a1eb-ab9c198d0479", "slug": "csf-racing", "name": "CSF Racing", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.73, "review_count": 37, "product_count": 13, "quality_score": 7.69, "benchmark_rating": 4.77, "benchmark_tier": "segment", "top_segments": [ "Cooling" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.7, "weight": 3, "rationale": "Based on 37 verified-buyer reviews across 13 products. Raw average 4.73/5. Compared against a 4.77/5 benchmark drawn from the product segments this brand sells in (Cooling). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.9, "weight": 0.75, "rationale": "37 reviews across 13 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.1, "weight": 1.5, "rationale": "5.4% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8 }, { "id": "5a487b40-60e4-419f-bd68-87ecb6ff0453", "slug": "darkmatterx", "name": "DARKMATTERX", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.7, "review_count": 76, "product_count": 39, "quality_score": 7.35, "benchmark_rating": 4.77, "benchmark_tier": "segment", "top_segments": [ "Interior Trim", "Shifters & Bushings", "Brake Hardware", "Interior Accessories" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.4, "weight": 3, "rationale": "Based on 76 verified-buyer reviews across 39 products. Raw average 4.70/5. Compared against a 4.77/5 benchmark drawn from the product segments this brand sells in (Interior Trim, Shifters & Bushings, Brake Hardware, Interior Accessories). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.4, "weight": 0.75, "rationale": "76 reviews across 39 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.6, "weight": 1.5, "rationale": "3.9% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8 }, { "id": "d2710761-4cd8-45c3-9858-78a6eb41d19b", "slug": "hella", "name": "Hella", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.73, "review_count": 95, "product_count": 2, "quality_score": 7.44, "benchmark_rating": 4.79, "benchmark_tier": "segment", "top_segments": [ "Electrical" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.4, "weight": 3, "rationale": "Based on 95 verified-buyer reviews across 2 products. Raw average 4.73/5. Compared against a 4.79/5 benchmark drawn from the product segments this brand sells in (Electrical). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.5, "weight": 0.75, "rationale": "95 reviews across 2 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.5, "weight": 1.5, "rationale": "4.2% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8 }, { "id": "c0023fd0-6c25-412a-bc43-4d6e0af0ef8c", "slug": "morimoto", "name": "Morimoto", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.71, "review_count": 200, "product_count": 17, "quality_score": 7.54, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Exterior Lighting", "Fog Lights", "Interior Lighting", "Headlights" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.5, "weight": 3, "rationale": "Based on 200 verified-buyer reviews across 17 products. Raw average 4.71/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Exterior Lighting, Fog Lights, Interior Lighting, Headlights). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "200 reviews across 17 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.9, "weight": 1.5, "rationale": "6.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8 }, { "id": "9586ec10-e0f0-4f1b-a12a-792f138cb282", "slug": "pedders-suspension", "name": "Pedders Suspension", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.73, "review_count": 26, "product_count": 7, "quality_score": 7.43, "benchmark_rating": 4.82, "benchmark_tier": "segment", "top_segments": [ "Chassis Bracing", "Apparel", "Coilovers", "Springs" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.4, "weight": 3, "rationale": "Based on 26 verified-buyer reviews across 7 products. Raw average 4.73/5. Compared against a 4.82/5 benchmark drawn from the product segments this brand sells in (Chassis Bracing, Apparel, Coilovers, Springs). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.7, "weight": 0.75, "rationale": "26 reviews across 7 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.7, "weight": 1.5, "rationale": "3.8% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8 }, { "id": "063236a9-b725-4740-8afa-47e7067c4749", "slug": "takara-tomy-tomica", "name": "Takara Tomy Tomica", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.67, "review_count": 12, "product_count": 2, "quality_score": 6.98, "benchmark_rating": 4.9, "benchmark_tier": "segment", "top_segments": [ "Merchandise" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7, "weight": 3, "rationale": "Based on 12 verified-buyer reviews across 2 products. Raw average 4.67/5. Compared against a 4.90/5 benchmark drawn from the product segments this brand sells in (Merchandise). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.2, "weight": 0.75, "rationale": "12 reviews across 2 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 10, "weight": 1.5, "rationale": "0.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 8 }, { "id": "e5e27e65-3d1e-4c10-8089-892d46cd6e70", "slug": "aem-electronics", "name": "AEM Electronics", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.7, "review_count": 203, "product_count": 24, "quality_score": 7.51, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Fuel System", "Gauges", "Boost Control", "Sensors & Monitoring" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.5, "weight": 3, "rationale": "Based on 203 verified-buyer reviews across 24 products. Raw average 4.70/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Fuel System, Gauges, Boost Control, Sensors & Monitoring). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "203 reviews across 24 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.8, "weight": 1.5, "rationale": "6.4% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.9 }, { "id": "08f562e6-360e-4fde-b126-a6a68f2d46be", "slug": "blox", "name": "BLOX", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.7, "review_count": 44, "product_count": 15, "quality_score": 7.27, "benchmark_rating": 4.8, "benchmark_tier": "segment", "top_segments": [ "Axle-Back Exhaust", "Alignment & Arms", "Body Panels", "Aero" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.3, "weight": 3, "rationale": "Based on 44 verified-buyer reviews across 15 products. Raw average 4.70/5. Compared against a 4.80/5 benchmark drawn from the product segments this brand sells in (Axle-Back Exhaust, Alignment & Arms, Body Panels, Aero). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9, "weight": 0.75, "rationale": "44 reviews across 15 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.4, "weight": 1.5, "rationale": "4.5% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.9 }, { "id": "bfd98c03-56c9-46a7-b468-51503df2b4ba", "slug": "greddy-usa", "name": "Greddy USA", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.74, "review_count": 61, "product_count": 28, "quality_score": 7.37, "benchmark_rating": 4.82, "benchmark_tier": "segment", "top_segments": [ "Service Kits", "Cat-Back Exhaust", "Aero", "Engine Bay Dress-Up" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.4, "weight": 3, "rationale": "Based on 61 verified-buyer reviews across 28 products. Raw average 4.74/5. Compared against a 4.82/5 benchmark drawn from the product segments this brand sells in (Service Kits, Cat-Back Exhaust, Aero, Engine Bay Dress-Up). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.2, "weight": 0.75, "rationale": "61 reviews across 28 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.3, "weight": 1.5, "rationale": "4.9% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.9 }, { "id": "b2191ae0-c6f9-4ff7-baa1-8cc6587604ea", "slug": "re-do", "name": "re:do", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.83, "review_count": 23, "product_count": 1, "quality_score": 7.37, "benchmark_rating": 4.97, "benchmark_tier": "segment", "top_segments": [ "Other" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.4, "weight": 3, "rationale": "Based on 23 verified-buyer reviews across 1 products. Raw average 4.83/5. Compared against a 4.97/5 benchmark drawn from the product segments this brand sells in (Other). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.6, "weight": 0.75, "rationale": "23 reviews across 1 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.5, "weight": 1.5, "rationale": "4.3% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.9 }, { "id": "06ed5f40-cac1-4d2b-9312-668b0126dc83", "slug": "spec-d", "name": "Spec-D", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.57, "review_count": 226, "product_count": 35, "quality_score": 7.66, "benchmark_rating": 4.56, "benchmark_tier": "segment", "top_segments": [ "Tail Lights", "Headlights", "Cat-Back Exhaust" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.7, "weight": 3, "rationale": "Based on 226 verified-buyer reviews across 35 products. Raw average 4.57/5. Compared against a 4.56/5 benchmark drawn from the product segments this brand sells in (Tail Lights, Headlights, Cat-Back Exhaust). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "226 reviews across 35 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.4, "weight": 1.5, "rationale": "7.5% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.9 }, { "id": "18f1aad4-c5ae-4af3-b247-141619757522", "slug": "walbro", "name": "Walbro", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.72, "review_count": 29, "product_count": 6, "quality_score": 7.78, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Fuel System" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.8, "weight": 3, "rationale": "Based on 29 verified-buyer reviews across 6 products. Raw average 4.72/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Fuel System). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.7, "weight": 0.75, "rationale": "29 reviews across 6 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.6, "weight": 1.5, "rationale": "6.9% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.9 }, { "id": "40cd85db-635e-48d6-acf5-d40890ed40b6", "slug": "mishimoto", "name": "Mishimoto", "website": "https://www.mishimoto.com", "country": "USA", "category": "Cooling", "founded_year": 2005, "tagline": "Cooling with lifetime warranty", "summary": "Cooling specialist producing radiators, oil coolers and intercoolers, with an unusually strong warranty position.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Lifetime warranty on most cooling products.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.63, "review_count": 723, "product_count": 157, "quality_score": 6.49, "benchmark_rating": 4.79, "benchmark_tier": "segment", "top_segments": [ "Cooling", "Hardware & Fittings", "Exterior Trim", "Air Intakes" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.5, "weight": 3, "rationale": "Based on 723 verified-buyer reviews across 157 products. Raw average 4.63/5. Compared against a 4.79/5 benchmark drawn from the product segments this brand sells in (Cooling, Hardware & Fittings, Exterior Trim, Air Intakes). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "723 reviews across 157 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.8, "weight": 1.5, "rationale": "6.4% of reviews are 1-2 stars.", "sort_order": 3 }, { "category": "Reported issues", "score": 8.5, "weight": 1.5, "rationale": "1 approved community issue report(s).", "sort_order": 4 }, { "category": "Longevity", "score": 9.2, "weight": 0.75, "rationale": "21 years in the industry.", "sort_order": 8 } ], "overall": 7.8 }, { "id": "c6af38d3-3938-4089-baf1-be5e7624a523", "slug": "apr", "name": "APR", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.66, "review_count": 93, "product_count": 36, "quality_score": 7.14, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Exterior Trim", "Aero", "Engine Bay Dress-Up", "Body Panels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.1, "weight": 3, "rationale": "Based on 93 verified-buyer reviews across 36 products. Raw average 4.66/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Exterior Trim, Aero, Engine Bay Dress-Up, Body Panels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.5, "weight": 0.75, "rationale": "93 reviews across 36 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.1, "weight": 1.5, "rationale": "5.4% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.7 }, { "id": "fb9ad18d-b3bc-412a-af85-f1c242576131", "slug": "muteki", "name": "Muteki", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.64, "review_count": 165, "product_count": 29, "quality_score": 7.05, "benchmark_rating": 4.73, "benchmark_tier": "segment", "top_segments": [ "Wheel Hardware" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.1, "weight": 3, "rationale": "Based on 165 verified-buyer reviews across 29 products. Raw average 4.64/5. Compared against a 4.73/5 benchmark drawn from the product segments this brand sells in (Wheel Hardware). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.9, "weight": 0.75, "rationale": "165 reviews across 29 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.9, "weight": 1.5, "rationale": "6.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.7 }, { "id": "02045a6e-cb51-4da6-9062-103dd13f33f4", "slug": "go-fast-bits", "name": "Go Fast Bits", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.66, "review_count": 137, "product_count": 15, "quality_score": 7.08, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Blow Off Valves", "Wastegates" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.1, "weight": 3, "rationale": "Based on 137 verified-buyer reviews across 15 products. Raw average 4.66/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Blow Off Valves, Wastegates). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.8, "weight": 0.75, "rationale": "137 reviews across 15 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.5, "weight": 1.5, "rationale": "7.3% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.6 }, { "id": "ccd2b8e3-9d51-4b56-8320-714bc6a30744", "slug": "goodridge", "name": "Goodridge", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.63, "review_count": 51, "product_count": 12, "quality_score": 7.27, "benchmark_rating": 4.7, "benchmark_tier": "segment", "top_segments": [ "Clutches", "Brake Lines & Fluid" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.3, "weight": 3, "rationale": "Based on 51 verified-buyer reviews across 12 products. Raw average 4.63/5. Compared against a 4.70/5 benchmark drawn from the product segments this brand sells in (Clutches, Brake Lines & Fluid). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.1, "weight": 0.75, "rationale": "51 reviews across 12 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.3, "weight": 1.5, "rationale": "7.8% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.6 }, { "id": "08a96a41-84d0-4c56-8b06-e35b08bd8fd1", "slug": "weathertech", "name": "Weathertech", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.68, "review_count": 57, "product_count": 22, "quality_score": 7.2, "benchmark_rating": 4.78, "benchmark_tier": "segment", "top_segments": [ "Floor Mats & Liners", "Interior Trim", "Exterior Protection" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.2, "weight": 3, "rationale": "Based on 57 verified-buyer reviews across 22 products. Raw average 4.68/5. Compared against a 4.78/5 benchmark drawn from the product segments this brand sells in (Floor Mats & Liners, Interior Trim, Exterior Protection). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.2, "weight": 0.75, "rationale": "57 reviews across 22 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.5, "weight": 1.5, "rationale": "7.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.6 }, { "id": "3a56b730-85bf-4660-8e8d-8a01678541f4", "slug": "pedal-commander", "name": "Pedal Commander", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.67, "review_count": 30, "product_count": 2, "quality_score": 6.95, "benchmark_rating": 4.82, "benchmark_tier": "segment", "top_segments": [ "Engine Management" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7, "weight": 3, "rationale": "Based on 30 verified-buyer reviews across 2 products. Raw average 4.67/5. Compared against a 4.82/5 benchmark drawn from the product segments this brand sells in (Engine Management). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.8, "weight": 0.75, "rationale": "30 reviews across 2 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.7, "weight": 1.5, "rationale": "6.7% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.5 }, { "id": "a8694a9f-4ec4-4d3b-ae29-ccc7a38ac3d1", "slug": "smy", "name": "SMY", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.6, "review_count": 162, "product_count": 40, "quality_score": 6.38, "benchmark_rating": 4.78, "benchmark_tier": "segment", "top_segments": [ "Gauges", "Intercoolers", "Engine Bay Dress-Up", "Sway Bars & Endlinks" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.4, "weight": 3, "rationale": "Based on 162 verified-buyer reviews across 40 products. Raw average 4.60/5. Compared against a 4.78/5 benchmark drawn from the product segments this brand sells in (Gauges, Intercoolers, Engine Bay Dress-Up, Sway Bars & Endlinks). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.9, "weight": 0.75, "rationale": "162 reviews across 40 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.5, "weight": 1.5, "rationale": "4.3% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.5 }, { "id": "7e94325a-5487-43b2-8168-92ec0b138505", "slug": "aem", "name": "AEM", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.65, "review_count": 48, "product_count": 15, "quality_score": 6.75, "benchmark_rating": 4.81, "benchmark_tier": "segment", "top_segments": [ "Air Intakes", "Chassis Bracing", "Air Filters" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.8, "weight": 3, "rationale": "Based on 48 verified-buyer reviews across 15 products. Raw average 4.65/5. Compared against a 4.81/5 benchmark drawn from the product segments this brand sells in (Air Intakes, Chassis Bracing, Air Filters). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.1, "weight": 0.75, "rationale": "48 reviews across 15 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.8, "weight": 1.5, "rationale": "6.3% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.4 }, { "id": "5d685428-0295-4014-9d22-0b9e6ef2b599", "slug": "afe-power", "name": "aFe Power", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.64, "review_count": 53, "product_count": 30, "quality_score": 6.74, "benchmark_rating": 4.8, "benchmark_tier": "segment", "top_segments": [ "Air Intakes", "Air Filters", "Cat-Back Exhaust", "Other" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.7, "weight": 3, "rationale": "Based on 53 verified-buyer reviews across 30 products. Raw average 4.64/5. Compared against a 4.80/5 benchmark drawn from the product segments this brand sells in (Air Intakes, Air Filters, Cat-Back Exhaust, Other). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.1, "weight": 0.75, "rationale": "53 reviews across 30 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8, "weight": 1.5, "rationale": "5.7% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.4 }, { "id": "0a3e388a-d71d-4cb5-b66c-69af0c7cfffe", "slug": "gates-performance", "name": "Gates Performance", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.67, "review_count": 81, "product_count": 20, "quality_score": 6.68, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Service Kits", "Cooling", "Engine Internals" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.7, "weight": 3, "rationale": "Based on 81 verified-buyer reviews across 20 products. Raw average 4.67/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Service Kits, Cooling, Engine Internals). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.4, "weight": 0.75, "rationale": "81 reviews across 20 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.8, "weight": 1.5, "rationale": "6.2% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.4 }, { "id": "5b098969-637c-44b4-a6de-d1db89ce3b20", "slug": "tein", "name": "Tein", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.61, "review_count": 38, "product_count": 13, "quality_score": 6.74, "benchmark_rating": 4.77, "benchmark_tier": "segment", "top_segments": [ "Coilovers", "Springs", "Merchandise", "Suspension Control" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.7, "weight": 3, "rationale": "Based on 38 verified-buyer reviews across 13 products. Raw average 4.61/5. Compared against a 4.77/5 benchmark drawn from the product segments this brand sells in (Coilovers, Springs, Merchandise, Suspension Control). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.9, "weight": 0.75, "rationale": "38 reviews across 13 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.2, "weight": 1.5, "rationale": "5.3% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.4 }, { "id": "1e874ff6-44ba-4b3d-8a83-bad057223943", "slug": "torque-solution", "name": "Torque Solution", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.67, "review_count": 241, "product_count": 112, "quality_score": 6.61, "benchmark_rating": 4.83, "benchmark_tier": "segment", "top_segments": [ "Shifters & Bushings", "Differentials", "Exhaust Components", "Cooling" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.6, "weight": 3, "rationale": "Based on 241 verified-buyer reviews across 112 products. Raw average 4.67/5. Compared against a 4.83/5 benchmark drawn from the product segments this brand sells in (Shifters & Bushings, Differentials, Exhaust Components, Cooling). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "241 reviews across 112 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.7, "weight": 1.5, "rationale": "6.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.4 }, { "id": "3ec6c2a6-f42b-473b-ad5b-54cc9430fe26", "slug": "3dmaxpider", "name": "3DMaxpider", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.62, "review_count": 45, "product_count": 13, "quality_score": 6.7, "benchmark_rating": 4.79, "benchmark_tier": "segment", "top_segments": [ "Floor Mats & Liners" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.7, "weight": 3, "rationale": "Based on 45 verified-buyer reviews across 13 products. Raw average 4.62/5. Compared against a 4.79/5 benchmark drawn from the product segments this brand sells in (Floor Mats & Liners). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9, "weight": 0.75, "rationale": "45 reviews across 13 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.7, "weight": 1.5, "rationale": "6.7% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.3 }, { "id": "51ce214c-80f3-4cf8-9e44-9193339f4139", "slug": "compressive-tuning", "name": "Compressive Tuning", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.61, "review_count": 216, "product_count": 43, "quality_score": 6.26, "benchmark_rating": 4.8, "benchmark_tier": "segment", "top_segments": [ "Shift Knobs", "Engine Bay Dress-Up", "Aero", "Intercoolers" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.3, "weight": 3, "rationale": "Based on 216 verified-buyer reviews across 43 products. Raw average 4.61/5. Compared against a 4.80/5 benchmark drawn from the product segments this brand sells in (Shift Knobs, Engine Bay Dress-Up, Aero, Intercoolers). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "216 reviews across 43 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.1, "weight": 1.5, "rationale": "5.6% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.3 }, { "id": "83de8ec9-6a81-4078-ac51-4596941d038b", "slug": "velossa-tech", "name": "Velossa Tech", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.55, "review_count": 22, "product_count": 5, "quality_score": 6.4, "benchmark_rating": 4.79, "benchmark_tier": "segment", "top_segments": [ "Air Intakes" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.4, "weight": 3, "rationale": "Based on 22 verified-buyer reviews across 5 products. Raw average 4.55/5. Compared against a 4.79/5 benchmark drawn from the product segments this brand sells in (Air Intakes). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.6, "weight": 0.75, "rationale": "22 reviews across 5 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 8.4, "weight": 1.5, "rationale": "4.5% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.3 }, { "id": "1289216a-22dd-4716-9015-57f2e2d91580", "slug": "rexpeed", "name": "Rexpeed", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.58, "review_count": 74, "product_count": 28, "quality_score": 6.52, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Exterior Trim", "Body Panels", "Aero", "Interior Trim" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.5, "weight": 3, "rationale": "Based on 74 verified-buyer reviews across 28 products. Raw average 4.58/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Exterior Trim, Body Panels, Aero, Interior Trim). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.4, "weight": 0.75, "rationale": "74 reviews across 28 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 7.6, "weight": 1.5, "rationale": "6.8% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.2 }, { "id": "82869edf-052a-4ce6-b722-7538a1495f69", "slug": "spyder", "name": "Spyder", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.37, "review_count": 38, "product_count": 7, "quality_score": 7.58, "benchmark_rating": 4.32, "benchmark_tier": "segment", "top_segments": [ "Headlights", "Tail Lights" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 7.6, "weight": 3, "rationale": "Based on 38 verified-buyer reviews across 7 products. Raw average 4.37/5. Compared against a 4.32/5 benchmark drawn from the product segments this brand sells in (Headlights, Tail Lights). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.9, "weight": 0.75, "rationale": "38 reviews across 7 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 5.4, "weight": 1.5, "rationale": "13.2% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 7.2 }, { "id": "e5251e3b-99f4-4d94-aca9-9efb43ed6c53", "slug": "ignition-projects", "name": "Ignition Projects", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.5, "review_count": 10, "product_count": 4, "quality_score": 6.79, "benchmark_rating": 4.73, "benchmark_tier": "segment", "top_segments": [ "Engine Internals" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 6.8, "weight": 3, "rationale": "Based on 10 verified-buyer reviews across 4 products. Raw average 4.50/5. Compared against a 4.73/5 benchmark drawn from the product segments this brand sells in (Engine Internals). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 8.1, "weight": 0.75, "rationale": "10 reviews across 4 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 6.5, "weight": 1.5, "rationale": "10.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 6.9 }, { "id": "0ecf8126-51e1-4b9b-8ed4-6324689e72d7", "slug": "act", "name": "ACT (Advanced Clutch Technology)", "website": "https://www.advancedclutch.com", "country": "USA", "category": "Drivetrain", "founded_year": 1994, "tagline": "Clutch and flywheel packages", "summary": "Clutch and flywheel manufacturer with staged Subaru offerings from street to competition use.", "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": "Limited warranty on manufacturing defects.", "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.42, "review_count": 178, "product_count": 26, "quality_score": 5.52, "benchmark_rating": 4.67, "benchmark_tier": "segment", "top_segments": [ "Clutches", "Flywheels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 5.5, "weight": 3, "rationale": "Based on 178 verified-buyer reviews across 26 products. Raw average 4.42/5. Compared against a 4.67/5 benchmark drawn from the product segments this brand sells in (Clutches, Flywheels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.9, "weight": 0.75, "rationale": "178 reviews across 26 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 6.3, "weight": 1.5, "rationale": "10.7% of reviews are 1-2 stars.", "sort_order": 3 }, { "category": "Longevity", "score": 10, "weight": 0.75, "rationale": "32 years in the industry.", "sort_order": 8 } ], "overall": 6.8 }, { "id": "a3ba64d5-8ca9-40c9-949c-ee87e22634ec", "slug": "lamin-x", "name": "Lamin-X", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.49, "review_count": 185, "product_count": 42, "quality_score": 5.78, "benchmark_rating": 4.72, "benchmark_tier": "segment", "top_segments": [ "Fog Lights", "Exterior Lighting", "Headlights", "Tail Lights" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 5.8, "weight": 3, "rationale": "Based on 185 verified-buyer reviews across 42 products. Raw average 4.49/5. Compared against a 4.72/5 benchmark drawn from the product segments this brand sells in (Fog Lights, Exterior Lighting, Headlights, Tail Lights). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 10, "weight": 0.75, "rationale": "185 reviews across 42 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 6.6, "weight": 1.5, "rationale": "9.7% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 6.6 }, { "id": "95b139c7-176d-49ee-adff-d1796fb8e602", "slug": "project-kics", "name": "Project Kics", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.49, "review_count": 70, "product_count": 30, "quality_score": 5.82, "benchmark_rating": 4.74, "benchmark_tier": "segment", "top_segments": [ "Wheel Hardware", "Wheels" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 5.8, "weight": 3, "rationale": "Based on 70 verified-buyer reviews across 30 products. Raw average 4.49/5. Compared against a 4.74/5 benchmark drawn from the product segments this brand sells in (Wheel Hardware, Wheels). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.3, "weight": 0.75, "rationale": "70 reviews across 30 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 6.5, "weight": 1.5, "rationale": "10.0% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 6.5 }, { "id": "8c4b8791-2986-48b1-95b1-0ed899c7ce95", "slug": "revel-gt", "name": "Revel GT", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.45, "review_count": 44, "product_count": 13, "quality_score": 5.37, "benchmark_rating": 4.79, "benchmark_tier": "segment", "top_segments": [ "Exterior Trim", "Engine Bay Dress-Up", "Interior Trim", "Exterior Protection" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 5.4, "weight": 3, "rationale": "Based on 44 verified-buyer reviews across 13 products. Raw average 4.45/5. Compared against a 4.79/5 benchmark drawn from the product segments this brand sells in (Exterior Trim, Engine Bay Dress-Up, Interior Trim, Exterior Protection). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9, "weight": 0.75, "rationale": "44 reviews across 13 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 6.8, "weight": 1.5, "rationale": "9.1% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 6.3 }, { "id": "c34fd8a8-bebf-472a-a5a0-a6a6b06d9f23", "slug": "seibon", "name": "Seibon", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.27, "review_count": 49, "product_count": 26, "quality_score": 4.09, "benchmark_rating": 4.75, "benchmark_tier": "segment", "top_segments": [ "Body Panels", "Aero", "Exterior Trim" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 4.1, "weight": 3, "rationale": "Based on 49 verified-buyer reviews across 26 products. Raw average 4.27/5. Compared against a 4.75/5 benchmark drawn from the product segments this brand sells in (Body Panels, Aero, Exterior Trim). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.1, "weight": 0.75, "rationale": "49 reviews across 26 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 5.7, "weight": 1.5, "rationale": "12.2% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 5.3 }, { "id": "727b3c30-1460-4eab-93f0-1791f39d048d", "slug": "otl", "name": "OTL", "website": null, "country": null, "category": null, "founded_year": null, "tagline": null, "summary": null, "ai_summary": null, "ai_summary_updated_at": null, "warranty_terms": null, "verified": false, "warranty_months": null, "warranty_type": null, "made_in_usa": null, "country_of_manufacture": null, "ownership_type": null, "years_in_business": null, "review_avg": 4.31, "review_count": 48, "product_count": 3, "quality_score": 4.58, "benchmark_rating": 4.73, "benchmark_tier": "segment", "top_segments": [ "Engine Internals" ], "editor_note": null, "editor_note_verified": false, "editor_note_updated_at": null, "components": [ { "category": "Product rating", "score": 4.6, "weight": 3, "rationale": "Based on 48 verified-buyer reviews across 3 products. Raw average 4.31/5. Compared against a 4.73/5 benchmark drawn from the product segments this brand sells in (Engine Internals). The score blends the rating on its own terms (35%) with performance against that benchmark (65%), after a small-sample adjustment.", "sort_order": 1 }, { "category": "Evidence confidence", "score": 9.1, "weight": 0.75, "rationale": "48 reviews across 3 products on record. Thin review histories are less reliable, so this factor applies a modest deduction rather than a heavy one.", "sort_order": 2 }, { "category": "Low-rating share", "score": 4.2, "weight": 1.5, "rationale": "16.7% of reviews are 1-2 stars.", "sort_order": 3 } ], "overall": 5.1 } ] }