{"product":{"id":11350205890902,"title":"Kooks Corvette C7 LT1 Performance-Catted Header Kits (2014-2019)","body_html":"\u003ch2\u003eGive your naturally aspirated Stingray more room to breathe\u003c\/h2\u003e\u003cp\u003eThese Kooks kits bring the headers and catted X-pipe together for your LT1-powered C7. Choose conventional 1-7\/8\" primaries or a stepped 1-7\/8\" to 2\" design, with both kits connecting to the 2-3\/4\" OEM-style rear exhaust. They are Performance-catalyst packages for naturally aspirated builds.\u003c\/p\u003e\u003cp\u003eSKUs: 2170H420, 2170H520\u003c\/p\u003e\u003ch2\u003eTwo header designs, one rear connection\u003c\/h2\u003e\u003cp\u003e2170H420 uses 1-7\/8\" primaries. 2170H520 steps from 1-7\/8\" to 2\". Both use 3\" collectors and a supplied catted X-pipe with the 2-3\/4\" OEM rear outlet. Choose the header design as part of your complete engine setup; a stepped tube is a design choice rather than a guaranteed horsepower figure.\u003c\/p\u003e\u003cp\u003eThe mid-pipe clamp studs may need trimming to clear the belly pan. Your installer should check this before refitting the pan.\u003c\/p\u003e\u003ch2\u003eChoose the cats for your naturally aspirated LT1\u003c\/h2\u003e\u003cp\u003eThe Performance cats are for a naturally aspirated LT1. If you are planning forced induction, choose an appropriate GREEN or H.O. GREEN package for that engine setup.\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\u003e2170H420\u003c\/td\u003e\n\u003ctd\u003eHeader Size: 1-7\/8\"; Cat Type: Performance Cats\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\u003e2170H520\u003c\/td\u003e\n\u003ctd\u003eHeader Size: 1-7\/8\" x 2\" Stepped; Cat Type: Performance Cats\u003c\/td\u003e\n\u003ctd\u003e1-7\/8\" x 2\" Stepped headers; Performance Cats front connections\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\u003eTuning for your exhaust upgrade\u003c\/h2\u003e\u003cp\u003eWe recommend tuning when fitting headers. Explore our \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/chevrolet-corvette-c7-ecu-and-tcm-tuning-2014-2019\"\u003eC7 ECU and TCM tuning\u003c\/a\u003e for your LT1 Corvette, or \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/pages\/contact\"\u003econtact us\u003c\/a\u003e to discuss the new exhaust and your other modifications before booking.\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\u003e2014-2019\u003c\/td\u003e\n\u003ctd\u003eChevrolet Corvette Stingray\u003c\/td\u003e\n\u003ctd\u003e6.2L V8\u003c\/td\u003e\n\u003ctd\u003e2170H420, 2170H520\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2014-2016\u003c\/td\u003e\n\u003ctd\u003eChevrolet Corvette Z51\u003c\/td\u003e\n\u003ctd\u003e6.2L V8\u003c\/td\u003e\n\u003ctd\u003e2170H420, 2170H520\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2019\u003c\/td\u003e\n\u003ctd\u003eChevrolet Corvette Grand Sport\u003c\/td\u003e\n\u003ctd\u003e6.2L V8\u003c\/td\u003e\n\u003ctd\u003e2170H420, 2170H520\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\u003e2170H420, 2170H520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e2014-2019 Corvette C7, naturally aspirated 6.2L LT1\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\u003eHeader choices\u003c\/td\u003e\n\u003ctd\u003e2170H420: 1-7\/8\"; 2170H520: 1-7\/8\" stepping to 2\"\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\u003eSupplied crossover\u003c\/td\u003e\n\u003ctd\u003ePerformance-catted X-pipe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear outlet\u003c\/td\u003e\n\u003ctd\u003e2-3\/4\" OEM-style interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalyst condition\u003c\/td\u003e\n\u003ctd\u003eNaturally aspirated only; not for forced induction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitting clearance\u003c\/td\u003e\n\u003ctd\u003eMid-pipe clamp studs may require trimming for belly-pan clearance\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\u003eWhich kit has stepped primaries?\u003c\/h3\u003e\u003cp\u003e2170H520. Its primary tubing steps from 1-7\/8\" to 2\".\u003c\/p\u003e\u003ch3\u003eIs this the kit for a supercharged Z06?\u003c\/h3\u003e\u003cp\u003eThese Performance-catted packages are for naturally aspirated LT1 applications. Choose a catalyst arrangement suited to the supercharged LT4 for a Z06.\u003c\/p\u003e\u003ch2\u003eIntended use\u003c\/h2\u003e\u003cp\u003eCompetition, 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":"2026-10-08T10:41:01+01:00","handle":"kooks-2014-2019-c7-corvette-header-conn-kits-e4b7af7c","updated_at":"2026-10-10T19:10:08+01:00","published_at":"2026-10-09T13:43:46+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":55646892654934,"product_id":11350205890902,"title":"1-7\/8\" \/ Performance Cats","price":"3394.95","sku":"2170H420","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"1-7\/8\"","option2":"Performance Cats","option3":null,"created_at":"2026-10-08T10:41:01+01:00","updated_at":"2026-10-10T19:10:08+01:00","taxable":true,"barcode":"842422177751","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":55646892687702,"product_id":11350205890902,"title":"1-7\/8\" x 2\" Stepped \/ Performance Cats","price":"4224.56","sku":"2170H520","position":2,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"1-7\/8\" x 2\" Stepped","option2":"Performance Cats","option3":null,"created_at":"2026-10-08T10:41:01+01:00","updated_at":"2026-10-10T19:10:08+01:00","taxable":true,"barcode":"842422177775","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":14512386933078,"product_id":11350205890902,"name":"Header Size","position":1,"values":["1-7\/8\"","1-7\/8\" x 2\" Stepped"]},{"id":14512386965846,"product_id":11350205890902,"name":"Cat Type","position":2,"values":["Performance Cats"]}],"images":[{"id":86449194107222,"product_id":11350205890902,"position":1,"created_at":"2026-10-08T10:41:01+01:00","updated_at":"2026-10-08T10:41:05+01:00","alt":"Kooks 2014-2019 C7 Corvette Header\/Connection Kits - 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