{"product_id":"kooks-15-21-ford-mustang-shelby-gt350r-shelby-gt350-1-3-4-x-1-7-8-x-3-header-catted-x-pipe-kit","title":"Kooks 15-21 Ford Mustang Shelby GT350R Shelby GT350 1-3\/4 x 1-7\/8 x 3 Header \u0026 Catted X-Pipe Kit","description":"\u003cp data-start=\"177\" data-end=\"288\"\u003e\u003cstrong data-start=\"177\" data-end=\"286\"\u003eKooks 1-3\/4\" x 1-7\/8\" x 3\" Long Tube Header \u0026amp; Catted X-Pipe Kit | 2015–2021 Mustang Shelby GT350 \u0026amp; GT350R\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"290\" data-end=\"611\"\u003eUnleash the true sound and performance of your \u003cstrong data-start=\"337\" data-end=\"387\"\u003e2015–2021 Ford Mustang Shelby GT350 and GT350R\u003c\/strong\u003e with the \u003cstrong data-start=\"397\" data-end=\"443\"\u003eKooks Long Tube Header \u0026amp; Catted X-Pipe Kit\u003c\/strong\u003e. Engineered for maximum horsepower, torque, and throttle response, this system is built to take your 5.2L Voodoo engine to the next level on the street or the track.\u003c\/p\u003e\n\u003cp data-start=\"613\" data-end=\"912\"\u003eFeaturing a \u003cstrong data-start=\"625\" data-end=\"692\"\u003estepped design (1-3\/4\" to 1-7\/8\" primaries into a 3\" collector)\u003c\/strong\u003e, these headers are designed to optimize exhaust flow across the powerband. The system also includes a \u003cstrong data-start=\"795\" data-end=\"815\"\u003e3\" catted X-pipe\u003c\/strong\u003e, providing a balanced exhaust note and aggressive tone while maintaining high-flow efficiency.\u003c\/p\u003e\n\u003cp data-start=\"914\" data-end=\"1260\"\u003eCrafted from premium \u003cstrong data-start=\"935\" data-end=\"976\"\u003eT304 aircraft-quality stainless steel\u003c\/strong\u003e, every component is precision-built, \u003cstrong data-start=\"1014\" data-end=\"1034\"\u003eCNC mandrel-bent\u003c\/strong\u003e, and \u003cstrong data-start=\"1040\" data-end=\"1060\"\u003efully TIG-welded\u003c\/strong\u003e for long-lasting durability. Backed by a \u003cstrong data-start=\"1102\" data-end=\"1131\"\u003elimited lifetime warranty\u003c\/strong\u003e, these headers are \u003cstrong data-start=\"1151\" data-end=\"1182\"\u003edyno-tested and race-proven\u003c\/strong\u003e, delivering championship-winning performance trusted by racers for decades.\u003c\/p\u003e\n\u003cp data-start=\"1262\" data-end=\"1475\"\u003eFor over 60 years, \u003cstrong data-start=\"1281\" data-end=\"1308\"\u003eKooks Headers \u0026amp; Exhaust\u003c\/strong\u003e has been the industry leader in high-performance exhaust systems—handcrafting parts in the USA and powering champions across \u003cstrong data-start=\"1434\" data-end=\"1472\"\u003eNHRA, NMRA, NASCAR, SCCA, and more\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1477\" data-end=\"1503\"\u003e\u003cstrong data-start=\"1477\" data-end=\"1501\"\u003eFeatures \u0026amp; Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1504\" data-end=\"2013\"\u003e\n\u003cli data-start=\"1504\" data-end=\"1566\"\u003e\n\u003cp data-start=\"1506\" data-end=\"1566\"\u003eFits 2015–2021 Mustang Shelby GT350 \u0026amp; GT350R (5.2L Voodoo)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1567\" data-end=\"1642\"\u003e\n\u003cp data-start=\"1569\" data-end=\"1642\"\u003eStepped long tube headers: 1-3\/4\" → 1-7\/8\" primaries into 3\" collectors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1643\" data-end=\"1716\"\u003e\n\u003cp data-start=\"1645\" data-end=\"1716\"\u003eIncludes 3\" high-flow catted X-pipe for aggressive tone \u0026amp; performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1717\" data-end=\"1767\"\u003e\n\u003cp data-start=\"1719\" data-end=\"1767\"\u003eBuilt from T304 aircraft-grade stainless steel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1768\" data-end=\"1812\"\u003e\n\u003cp data-start=\"1770\" data-end=\"1812\"\u003eCNC mandrel-bent tubing for optimal flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1813\" data-end=\"1873\"\u003e\n\u003cp data-start=\"1815\" data-end=\"1873\"\u003eFully TIG-welded construction for strength and precision\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1874\" data-end=\"1911\"\u003e\n\u003cp data-start=\"1876\" data-end=\"1911\"\u003eHandcrafted in the USA since 1962\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1912\" data-end=\"1971\"\u003e\n\u003cp data-start=\"1914\" data-end=\"1971\"\u003eDyno-proven, race-tested design for maximum power gains\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1972\" data-end=\"2013\"\u003e\n\u003cp data-start=\"1974\" data-end=\"2013\"\u003eBacked by a limited lifetime warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2015\" data-end=\"2200\"\u003eBring your Shelby GT350 or GT350R to life with the \u003cstrong data-start=\"2066\" data-end=\"2102\"\u003eKooks Header \u0026amp; Catted X-Pipe Kit\u003c\/strong\u003e—the perfect combination of race-winning performance, aggressive sound, and handcrafted quality.\u003c\/p\u003e","brand":"Kooks","offers":[{"title":"Default Title","offer_id":47036604154011,"sku":"ksh1154H320","price":4660.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0714\/9469\/7115\/files\/21391b88a26496dff48e31c554214b88.jpg?v=1755746639","url":"https:\/\/vertexmotorsports.com\/products\/kooks-15-21-ford-mustang-shelby-gt350r-shelby-gt350-1-3-4-x-1-7-8-x-3-header-catted-x-pipe-kit","provider":"Vertex Motorsports","version":"1.0","type":"link"}