{"product":{"id":11350219161942,"title":"Kooks Shelby GT350 X-Pipe Connections (2015-2020)","body_html":"\u003ch2\u003eKeep your GT350 rear mufflers when you fit Kooks headers\u003c\/h2\u003e\u003cp\u003eJoin your Kooks long tube headers to the factory rear mufflers with these stainless GT350 X-pipe connections. Choose Competition Only or GREEN cats, both using 3\" front pipework and 2-3\/4\" OEM rear outlets for the supported GT350 and GT350R.\u003c\/p\u003e\u003cp\u003eSKUs: 11543100, 11543300\u003c\/p\u003e\u003ch2\u003eAn X-pipe that keeps the factory rear system\u003c\/h2\u003e\u003cp\u003eThe 304 stainless tubing is mandrel bent, and the rear connection retains the factory mufflers. The stock exhaust must be cut during installation. That is the fitting work that makes the retained rear system part of the header upgrade.\u003c\/p\u003e\u003ch2\u003eChoose the front catalyst arrangement\u003c\/h2\u003e\u003cp\u003eGREEN gives you a catted option suitable for forced induction. Competition Only supplies uncatted connections for competition use. Both options include the X-pipe and require Kooks long tube headers, which are a separate purchase.\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\u003e11543100\u003c\/td\u003e\n\u003ctd\u003eCat Type: Comp. Only; Include X-Pipe?: Yes\u003c\/td\u003e\n\u003ctd\u003eCompetition Only connection assembly\u003c\/td\u003e\n\u003ctd\u003eFactory exhaust cut required; Uncatted; competition use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e11543300\u003c\/td\u003e\n\u003ctd\u003eCat Type: GREEN Cats; Include X-Pipe?: Yes\u003c\/td\u003e\n\u003ctd\u003eGREEN Cats connection assembly\u003c\/td\u003e\n\u003ctd\u003eFactory exhaust cut required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eMatching products\u003c\/h2\u003e\u003cp\u003ePair these pipes with the \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-11542300?variant=55646911988054\"\u003eGT350 stepped headers\u003c\/a\u003e. To continue into a full 3\" rear system, the \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-11546300?variant=55646913528150\"\u003eGT350 rear section with mufflers\u003c\/a\u003e is designed around the matching Kooks X-pipe and OEM connections.\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\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Shelby GT350R\u003c\/td\u003e\n\u003ctd\u003e5.2L V8\u003c\/td\u003e\n\u003ctd\u003e11543100, 11543300\u003c\/td\u003e\n\u003ctd\u003eFactory exhaust cut required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2020\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Shelby GT350\u003c\/td\u003e\n\u003ctd\u003e5.2L V8\u003c\/td\u003e\n\u003ctd\u003e11543100, 11543300\u003c\/td\u003e\n\u003ctd\u003eFactory exhaust cut required\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\u003e11543100, 11543300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003e2015-2020 Shelby GT350 \/ GT350R 5.2L V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eMandrel-bent 304 stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePipework\u003c\/td\u003e\n\u003ctd\u003e3\" X-pipe to 2-3\/4\" OEM rear outlets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChoices\u003c\/td\u003e\n\u003ctd\u003eCompetition Only or GREEN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetained parts\u003c\/td\u003e\n\u003ctd\u003eFactory rear mufflers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eFactory exhaust must be cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired headers\u003c\/td\u003e\n\u003ctd\u003eMatching Kooks long tube headers; separate purchase\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 either option include an X-pipe?\u003c\/h3\u003e\u003cp\u003eBoth options include the X-pipe.\u003c\/p\u003e\u003ch3\u003eCan I keep the factory mufflers?\u003c\/h3\u003e\u003cp\u003eYes. The system retains them, with the required factory exhaust cut.\u003c\/p\u003e\u003ch3\u003eAre these direct replacements for pipes under the stock manifolds?\u003c\/h3\u003e\u003cp\u003eThey require matching Kooks long tube headers.\u003c\/p\u003e\u003ch2\u003eIntended use\u003c\/h2\u003e\u003cp\u003e11543100: Competition, off-road and track use only. Not for use on public roads.\u003c\/p\u003e\u003cp\u003eThe competition-use waiver applies to 11543100.\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":"2026-10-08T10:41:49+01:00","handle":"kooks-2016-2020-shelby-gt350-connection-pipes","updated_at":"2026-10-10T18:29:55+01:00","published_at":"2026-10-09T13:36:11+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:ford-mustang, make:ford, type:exhaust-pipe","variants":[{"id":55646912250198,"product_id":11350219161942,"title":"Comp. Only \/ Yes","price":"2240.05","sku":"11543100","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Comp. Only","option2":"Yes","option3":null,"created_at":"2026-10-08T10:41:49+01:00","updated_at":"2026-10-10T18:29:55+01:00","taxable":true,"barcode":"842422130329","grams":20412,"image_id":null,"weight":20.412,"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":55646912282966,"product_id":11350219161942,"title":"GREEN Cats \/ Yes","price":"3092.03","sku":"11543300","position":2,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"GREEN Cats","option2":"Yes","option3":null,"created_at":"2026-10-08T10:41:49+01:00","updated_at":"2026-10-10T18:29:55+01:00","taxable":true,"barcode":"842422130992","grams":22226,"image_id":null,"weight":22.226,"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":14512403317078,"product_id":11350219161942,"name":"Cat Type","position":1,"values":["Comp. Only","GREEN Cats"]},{"id":14512403349846,"product_id":11350219161942,"name":"Include X-Pipe?","position":2,"values":["Yes"]}],"images":[{"id":86449315971414,"product_id":11350219161942,"position":1,"created_at":"2026-10-08T10:41:49+01:00","updated_at":"2026-10-08T10:41:52+01:00","alt":"Kooks 2016-2020 Shelby GT350 Connection Pipes","width":900,"height":601,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/cae06c7c49560908480afe91fc3ef732_0a14492f-1a9a-4156-a41a-571f9c6ef988.png?v=1791452512","variant_ids":[]},{"id":86449316004182,"product_id":11350219161942,"position":2,"created_at":"2026-10-08T10:41:49+01:00","updated_at":"2026-10-08T10:41:52+01:00","alt":"Kooks 2016-2020 Shelby GT350 Connection Pipes","width":900,"height":601,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/40685e7e1bfba3a8233eeaa4f7a8f69b.png?v=1791452512","variant_ids":[]},{"id":86449316036950,"product_id":11350219161942,"position":3,"created_at":"2026-10-08T10:41:49+01:00","updated_at":"2026-10-08T10:41:52+01:00","alt":"Kooks 2016-2020 Shelby GT350 Connection Pipes","width":900,"height":601,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/baeedbd17b443125eb3d133f04395de7_2dcee901-5040-4af8-9a62-fc732b6643e4.png?v=1791452512","variant_ids":[]},{"id":86449316069718,"product_id":11350219161942,"position":4,"created_at":"2026-10-08T10:41:49+01:00","updated_at":"2026-10-08T10:41:52+01:00","alt":"Kooks 2016-2020 Shelby GT350 Connection Pipes","width":900,"height":601,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/d8e5a1136a6d98fa5c56fd7c6b3d1fd8_ac2886d7-99c9-49cb-a677-534f964ae316.png?v=1791452512","variant_ids":[]},{"id":86449316102486,"product_id":11350219161942,"position":5,"created_at":"2026-10-08T10:41:49+01:00","updated_at":"2026-10-08T10:41:52+01:00","alt":"Kooks 2016-2020 Shelby GT350 Connection Pipes","width":900,"height":601,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/ee47faa88fe48389cb1d31a3bc3c9cfe_513daba7-0097-4971-b468-f201434aa056.png?v=1791452512","variant_ids":[]}],"image":{"id":86449315971414,"product_id":11350219161942,"position":1,"created_at":"2026-10-08T10:41:49+01:00","updated_at":"2026-10-08T10:41:52+01:00","alt":"Kooks 2016-2020 Shelby GT350 Connection Pipes","width":900,"height":601,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/cae06c7c49560908480afe91fc3ef732_0a14492f-1a9a-4156-a41a-571f9c6ef988.png?v=1791452512","variant_ids":[]}}}