{"product":{"id":11350223978838,"title":"Kooks X-Pipe Options for Corvette C5 (1997-2004)","body_html":"\u003ch2\u003eConnect your C5 headers to the exhaust you want\u003c\/h2\u003e\u003cp\u003eKeep the compatible factory rear exhaust or move to full 3\" pipework: this Kooks X-pipe range gives your C5 both routes. The stainless three-piece design joins matching Kooks long tube headers, with catalyst choices for naturally aspirated and modified engines. Choose the rear connection as carefully as the catalyst type so the whole exhaust fits your plan.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSKUs:\u003c\/strong\u003e 21503101, 21503111, 21503201, 21503211, 21503301, 21503311\u003c\/p\u003e\u003ch2\u003eOEM rear exhaust or full 3\" pipework\u003c\/h2\u003e\u003cp\u003eThe 2-1\/2\" rear-outlet versions provide the reduction to the compatible OEM rear exhaust. The 3\" versions maintain a full 3\" rear connection for a matching aftermarket exhaust. Both begin with the 3\" Kooks header connection; the outlet choice determines what they join further back.\u003c\/p\u003e\u003ch2\u003eChoose the catalyst around the engine\u003c\/h2\u003e\u003cp\u003ePerformance Cats are for naturally aspirated applications. GREEN catalysts also support forced induction within their rating. Competition Only pipes are catalyst-free and intended for competition, off-road and track use. The table keeps each catalyst and rear-outlet combination tied to its actual SKU.\u003c\/p\u003e\u003ch2\u003eFitting the complete system\u003c\/h2\u003e\u003cp\u003eThis is an X-pipe arrangement for Kooks long tube headers, not the original exhaust manifolds. We recommend professional fitting, with pipe alignment, heat clearance and the header and rear-exhaust connections checked together. Plan the calibration around the finished system.\u003c\/p\u003e\u003ch2\u003eChoose your option\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSKU\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eCat Type\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eOutlet Size\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eFitting \/ contents\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eStated use restriction\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e21503101\u003c\/td\u003e\n\u003ctd\u003eComp. Only\u003c\/td\u003e\n\u003ctd\u003e2-1\/2\" (OEM)\u003c\/td\u003e\n\u003ctd\u003e2-1\/2\" OEM rear connection.\u003c\/td\u003e\n\u003ctd\u003eCompetition, off-road and track use only. Not for use on public roads. Kooks competition-use waiver required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e21503111\u003c\/td\u003e\n\u003ctd\u003eComp. Only\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e3\" aftermarket rear connection.\u003c\/td\u003e\n\u003ctd\u003eCompetition, off-road and track use only. Not for use on public roads. Kooks competition-use waiver required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e21503201\u003c\/td\u003e\n\u003ctd\u003ePerformance Cats\u003c\/td\u003e\n\u003ctd\u003e2-1\/2\" (OEM)\u003c\/td\u003e\n\u003ctd\u003e2-1\/2\" OEM rear connection. Naturally aspirated only.\u003c\/td\u003e\n\u003ctd\u003eCompetition, off-road and track use only. Not for use on public roads.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e21503211\u003c\/td\u003e\n\u003ctd\u003ePerformance Cats\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e3\" aftermarket rear connection. Naturally aspirated only.\u003c\/td\u003e\n\u003ctd\u003eCompetition, off-road and track use only. Not for use on public roads.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e21503301\u003c\/td\u003e\n\u003ctd\u003eGREEN Cats\u003c\/td\u003e\n\u003ctd\u003e2-1\/2\" (OEM)\u003c\/td\u003e\n\u003ctd\u003e2-1\/2\" OEM rear connection.\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e21503311\u003c\/td\u003e\n\u003ctd\u003eGREEN Cats\u003c\/td\u003e\n\u003ctd\u003e3\"\u003c\/td\u003e\n\u003ctd\u003e3\" aftermarket rear connection.\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eVehicle fitment\u003c\/h2\u003e\u003ctable class=\"vehicle-fitment\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eYears\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eVehicle and trim\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eEngine\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eApplicable SKU \/ fitting 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\u003e21503101, 21503111, 21503201, 21503211, 21503301, 21503311\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\u003e21503101, 21503111, 21503201, 21503211, 21503301, 21503311\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\u003e21503101, 21503111, 21503201, 21503211, 21503301, 21503311\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\u003e21503101, 21503111, 21503201, 21503211, 21503301, 21503311\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\u003e21503101, 21503111, 21503201, 21503211, 21503301, 21503311\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\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\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCorvette C5, 1997-2004; 5.7 LS1 \/ LS6 applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003e304 stainless steel; three-piece X-pipe design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeader connection\u003c\/td\u003e\n\u003ctd\u003e3\"; matching Kooks long tube headers required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear-outlet choices\u003c\/td\u003e\n\u003ctd\u003e2-1\/2\" OEM rear connection or 3\" connection for matching aftermarket exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM-outlet package\u003c\/td\u003e\n\u003ctd\u003eIncludes the 3\" to 2-1\/2\" mid-pipe connection arrangement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalyst choices\u003c\/td\u003e\n\u003ctd\u003eCompetition Only, Performance Cats or GREEN Cats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eWhich version retains the original rear exhaust?\u003c\/h3\u003e\u003cp\u003eChoose the 2-1\/2\" OEM rear-outlet version for the compatible factory exhaust.\u003c\/p\u003e\u003ch3\u003eWill the full 3\" version fit my OEM rear exhaust?\u003c\/h3\u003e\u003cp\u003eIt needs a matching 3\" aftermarket rear connection. Choose the reduced 2-1\/2\" outlet when retaining the compatible OEM exhaust.\u003c\/p\u003e\u003ch3\u003eDoes this work with the factory manifolds?\u003c\/h3\u003e\u003cp\u003eNo. Match it to the Kooks long tube header application.\u003c\/p\u003e\u003ch3\u003eCan I use Performance Cats with forced induction?\u003c\/h3\u003e\u003cp\u003eNo. Choose an appropriate GREEN catalyst option for a supercharged or turbocharged engine.\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":"Exhaust Pipes","created_at":"2026-10-08T10:42:36+01:00","handle":"kooks-1997-2004-c5-corvette-x-pipes","updated_at":"2026-10-10T17:50:37+01:00","published_at":"2026-10-09T13:07:16+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:chevrolet-corvette, make:chevrolet, type:exhaust-pipe","variants":[{"id":55646924144982,"product_id":11350223978838,"title":"Comp. Only \/ 2-1\/2\" (OEM)","price":"1735.52","sku":"21503101","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Comp. 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