{"product":{"id":11350202188118,"title":"Kooks Corvette C5 Header and X-Pipe Kits without Emissions Fittings","body_html":"\u003ch2\u003eChoose the C5 exhaust upgrade that suits your engine\u003c\/h2\u003e\u003cp\u003eGive your C5 a matched set of Kooks long tube headers and a catted X-pipe, with a choice of primary size and catalyst specification. These packages are supplied without emissions fittings and connect to the 2-1\/2\" OEM-style rear exhaust. The available combinations are shown by SKU so you can choose the kit you actually need.\u003c\/p\u003e\u003cp\u003eSKUs: 2150H220, 2150H230, 2150H420, 2150H430, 2150H630\u003c\/p\u003e\u003ch2\u003eThree primary sizes, clearly compared\u003c\/h2\u003e\u003cp\u003eChoose 1-3\/4\" or 1-7\/8\" headers with Performance or GREEN cats, or 2\" headers with GREEN cats. All use 3\" collectors and the same OEM-style rear interface. Select the primary size for your engine and modifications; a larger tube is not automatically the right choice for every C5.\u003c\/p\u003e\u003ch2\u003eChoose the catalyst for the completed build\u003c\/h2\u003e\u003cp\u003ePerformance cats suit naturally aspirated engines. GREEN supports forced induction. The headers on this page have no emissions fittings, so use the separate emissions-fitting package when your installation calls for that version.\u003c\/p\u003e\u003ch2\u003eChoose your configuration\u003c\/h2\u003e\u003cdiv class=\"table-scroll\"\u003e\u003ctable class=\"variant-comparison\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSKU\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eConfiguration\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSupplied arrangement\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eFitting \/ engine conditions\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2150H220\u003c\/td\u003e\n\u003ctd\u003eHeader Size: 1-3\/4\"; Cat Type: Performance Cats; Includes Emissions Fittings: No\u003c\/td\u003e\n\u003ctd\u003e1-3\/4\" headers; Performance Cats front connections\u003c\/td\u003e\n\u003ctd\u003eNaturally aspirated only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2150H230\u003c\/td\u003e\n\u003ctd\u003eHeader Size: 1-3\/4\"; Cat Type: GREEN Cats; Includes Emissions Fittings: No\u003c\/td\u003e\n\u003ctd\u003e1-3\/4\" headers; GREEN Cats front connections\u003c\/td\u003e\n\u003ctd\u003eUse the SKU-specific vehicle rows below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2150H420\u003c\/td\u003e\n\u003ctd\u003eHeader Size: 1-7\/8\"; Cat Type: Performance Cats; Includes Emissions Fittings: No\u003c\/td\u003e\n\u003ctd\u003e1-7\/8\" headers; Performance Cats front connections\u003c\/td\u003e\n\u003ctd\u003eNaturally aspirated only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2150H430\u003c\/td\u003e\n\u003ctd\u003eHeader Size: 1-7\/8\"; Cat Type: GREEN Cats; Includes Emissions Fittings: No\u003c\/td\u003e\n\u003ctd\u003e1-7\/8\" headers; GREEN Cats front connections\u003c\/td\u003e\n\u003ctd\u003eUse the SKU-specific vehicle rows below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2150H630\u003c\/td\u003e\n\u003ctd\u003eHeader Size: 2\"; Cat Type: GREEN Cats; Includes Emissions Fittings: No\u003c\/td\u003e\n\u003ctd\u003e2\" headers; GREEN Cats front connections\u003c\/td\u003e\n\u003ctd\u003eUse the SKU-specific vehicle rows below\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eTuning for your exhaust upgrade\u003c\/h2\u003e\u003cp\u003eWe recommend tuning with every header installation so the calibration suits your new headers, complete exhaust and fuel. \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/pages\/contact\"\u003eContact us\u003c\/a\u003e to discuss the right tuning route for your vehicle.\u003c\/p\u003e\u003ch2\u003eVehicle fitment\u003c\/h2\u003e\u003cdiv class=\"table-scroll\"\u003e\u003ctable class=\"vehicle-fitment\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eYears\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eVehicle \/ trim\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eEngine\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eApplicable SKU\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eFitting conditions\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1997-2004\u003c\/td\u003e\n\u003ctd\u003eChevrolet Corvette Base\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e2150H220, 2150H230, 2150H420, 2150H430, 2150H630\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003eChevrolet Corvette Indianapolis 500 Pace Car\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e2150H220, 2150H230, 2150H420, 2150H430, 2150H630\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2001-2004\u003c\/td\u003e\n\u003ctd\u003eChevrolet Corvette Z06\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e2150H220, 2150H230, 2150H420, 2150H430, 2150H630\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eChevrolet Corvette 50th Anniversary Edition Pace Car\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e2150H220, 2150H230, 2150H420, 2150H430, 2150H630\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2003\u003c\/td\u003e\n\u003ctd\u003eChevrolet Corvette 50th Anniversary Edition\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e2150H220, 2150H230, 2150H420, 2150H430, 2150H630\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv class=\"table-scroll\"\u003e\u003ctable class=\"technical-specifications\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKUs\u003c\/td\u003e\n\u003ctd\u003e2150H220, 2150H230, 2150H420, 2150H430, 2150H630\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e1997-2004 Corvette C5 5.7L LS1\/LS6; see trim-specific years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary choices\u003c\/td\u003e\n\u003ctd\u003e1-3\/4\", 1-7\/8\" or 2\"; see the option table\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollectors\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear interface\u003c\/td\u003e\n\u003ctd\u003e2-1\/2\" OEM-style exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmissions fittings\u003c\/td\u003e\n\u003ctd\u003eNot included on these header versions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePerformance catalyst condition\u003c\/td\u003e\n\u003ctd\u003eNaturally aspirated only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDoes every header size have both cat choices?\u003c\/h3\u003e\u003cp\u003eThe 1-3\/4\" and 1-7\/8\" choices have Performance or GREEN cats. The 2\" choice on this page has GREEN cats.\u003c\/p\u003e\u003ch3\u003eWhich version has emissions fittings?\u003c\/h3\u003e\u003cp\u003eThese kits do not. The separate early-C5 emissions-fitting kits provide that header version.\u003c\/p\u003e\u003ch2\u003eIntended use\u003c\/h2\u003e\u003cp\u003e2150H220, 2150H420: Competition, off-road and track use only. Not for use on public roads.\u003c\/p\u003e\u003ch2\u003eOrdering and delivery\u003c\/h2\u003e\u003cp\u003eEstimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.\u003c\/p\u003e","vendor":"Kooks","product_type":"Header Kits","created_at":"2026-10-08T10:40:44+01:00","handle":"kooks-1997-2004-c5-corvette-header-x-pipe-kits-1340afa1","updated_at":"2026-10-10T18:25:46+01:00","published_at":"2026-10-09T13:46:16+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:chevrolet-corvette, make:chevrolet, type:header-kit","variants":[{"id":55646887182678,"product_id":11350202188118,"title":"1-3\/4\" \/ Performance Cats \/ No","price":"3286.45","sku":"2150H220","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"1-3\/4\"","option2":"Performance Cats","option3":"No","created_at":"2026-10-08T10:40:45+01:00","updated_at":"2026-10-10T18:25:46+01:00","taxable":true,"barcode":"842422177935","grams":27216,"image_id":null,"weight":27.216,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]},{"id":55646887215446,"product_id":11350202188118,"title":"1-3\/4\" \/ GREEN Cats \/ No","price":"3854.44","sku":"2150H230","position":2,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"1-3\/4\"","option2":"GREEN Cats","option3":"No","created_at":"2026-10-08T10:40:45+01:00","updated_at":"2026-10-10T18:25:46+01:00","taxable":true,"barcode":"842422177942","grams":27216,"image_id":null,"weight":27.216,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]},{"id":55646887248214,"product_id":11350202188118,"title":"1-7\/8\" \/ Performance Cats \/ No","price":"3382.86","sku":"2150H420","position":3,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"1-7\/8\"","option2":"Performance Cats","option3":"No","created_at":"2026-10-08T10:40:45+01:00","updated_at":"2026-10-10T18:25:46+01:00","taxable":true,"barcode":"842422177997","grams":27216,"image_id":null,"weight":27.216,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]},{"id":55646887280982,"product_id":11350202188118,"title":"1-7\/8\" \/ GREEN Cats \/ No","price":"3950.84","sku":"2150H430","position":4,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"1-7\/8\"","option2":"GREEN Cats","option3":"No","created_at":"2026-10-08T10:40:45+01:00","updated_at":"2026-10-10T18:25:46+01:00","taxable":true,"barcode":"842422178000","grams":27216,"image_id":null,"weight":27.216,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]},{"id":55646887313750,"product_id":11350202188118,"title":"2\" \/ GREEN Cats \/ No","price":"4045.95","sku":"2150H630","position":5,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"2\"","option2":"GREEN Cats","option3":"No","created_at":"2026-10-08T10:40:45+01:00","updated_at":"2026-10-10T18:25:46+01:00","taxable":true,"barcode":"842422178062","grams":27216,"image_id":null,"weight":27.216,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]}],"options":[{"id":14512382050646,"product_id":11350202188118,"name":"Header Size","position":1,"values":["1-3\/4\"","1-7\/8\"","2\""]},{"id":14512382083414,"product_id":11350202188118,"name":"Cat Type","position":2,"values":["Performance Cats","GREEN Cats"]},{"id":14512382116182,"product_id":11350202188118,"name":"Includes Emissions Fittings","position":3,"values":["No"]}],"images":[{"id":86449165304150,"product_id":11350202188118,"position":1,"created_at":"2026-10-08T10:40:45+01:00","updated_at":"2026-10-08T10:40:48+01:00","alt":"Kooks 1997-2004 C5 Corvette Header\/X-Pipe Kits - 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