{"product":{"id":11350217032022,"title":"Kooks Mustang GT 5.0 ULTRA X-Pipe to OEM Exhaust | 11513700","body_html":"\u003ch2\u003eChoose an X-crossover and keep your Mustang rear exhaust\u003c\/h2\u003e\u003cp\u003eJoin your Kooks header-and-connection exhaust to the OEM rear system with the ULTRA X-pipe. 11513700 supplies a 3-inch mandrel-bent 304 stainless crossover, with the adapters and clamps included for the listed 5.0 Mustang installation.\u003c\/p\u003e\u003cp\u003eSKU: 11513700\u003c\/p\u003e\u003ch2\u003eThe rear connection parts are included\u003c\/h2\u003e\u003cp\u003eThe supplied mid-pipe adapters and all clamps let you connect the Kooks front exhaust to the OEM rear section. You can choose this complete crossover arrangement instead of buying separate OEM adapters for those joints.\u003c\/p\u003e\u003ch2\u003eChoose the crossover you prefer\u003c\/h2\u003e\u003cp\u003eThe ULTRA X-pipe joins the two exhaust banks through an X-crossover. If you prefer an H-crossover, compare the matching Competition H-pipe for the same header-and-connection installation; your retained rear mufflers still influence the sound.\u003c\/p\u003e\u003ch2\u003eMatching products\u003c\/h2\u003e\u003cp\u003eFor the same 2015-2026 GT 5.0 Kooks-header-and-connection installation, compare the \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-11513600?variant=55646907924822\"\u003eCompetition H-pipe\u003c\/a\u003e if you prefer an H-crossover; it also includes mid-pipe adapters and clamps.\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\u003e2015-2026\u003c\/td\u003e\n\u003ctd\u003eFord Mustang GT\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e11513700\u003c\/td\u003e\n\u003ctd\u003eGT \/ Dark Horse 5.0L; Kooks headers and connection pipes; OEM rear; adapters \/ clamps included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2015-2026\u003c\/td\u003e\n\u003ctd\u003eFord Mustang GT Premium\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e11513700\u003c\/td\u003e\n\u003ctd\u003eGT \/ Dark Horse 5.0L; Kooks headers and connection pipes; OEM rear; adapters \/ clamps included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2020\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Bullitt\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e11513700\u003c\/td\u003e\n\u003ctd\u003eGT \/ Dark Horse 5.0L; Kooks headers and connection pipes; OEM rear; adapters \/ clamps included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2023\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Mach 1\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e11513700\u003c\/td\u003e\n\u003ctd\u003eGT \/ Dark Horse 5.0L; Kooks headers and connection pipes; OEM rear; adapters \/ clamps included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2024-2026\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Dark Horse\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e11513700\u003c\/td\u003e\n\u003ctd\u003eGT \/ Dark Horse 5.0L; Kooks headers and connection pipes; OEM rear; adapters \/ clamps included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2024-2025\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Dark Horse Premium\u003c\/td\u003e\n\u003ctd\u003e5.0L V8\u003c\/td\u003e\n\u003ctd\u003e11513700\u003c\/td\u003e\n\u003ctd\u003eGT \/ Dark Horse 5.0L; Kooks headers and connection pipes; OEM rear; adapters \/ clamps included\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\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e11513700\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e2015-2026 Mustang GT \/ Dark Horse 5.0L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePipe diameter\u003c\/td\u003e\n\u003ctd\u003e3-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eMandrel-bent tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003eMid-pipe adapters and all clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired front parts\u003c\/td\u003e\n\u003ctd\u003eKooks long tube headers and connection pipes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear connection\u003c\/td\u003e\n\u003ctd\u003eOEM rear exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrossover style\u003c\/td\u003e\n\u003ctd\u003eULTRA X-pipe\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\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eCan I fit this behind the factory headers?\u003c\/h3\u003e\u003cp\u003e11513700 requires Kooks long tube headers and connection pipes. The OEM connection is at the rear.\u003c\/p\u003e\u003ch3\u003eDo I need to buy separate mid-pipe adapters?\u003c\/h3\u003e\u003cp\u003eThe mid-pipe adapters and all clamps are included with this X-pipe.\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":"2026-10-08T10:41:40+01:00","handle":"kooks-11513700","updated_at":"2026-10-10T17:33:02+01:00","published_at":"2026-10-09T13:37:33+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":55646908383574,"product_id":11350217032022,"title":"Default Title","price":"734.62","sku":"11513700","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-10-08T10:41:40+01:00","updated_at":"2026-10-10T17:33:02+01:00","taxable":true,"barcode":"842422182267","grams":13608,"image_id":null,"weight":13.608,"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":14512400892246,"product_id":11350217032022,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":86449296998742,"product_id":11350217032022,"position":1,"created_at":"2026-10-08T10:41:40+01:00","updated_at":"2026-10-08T10:41:43+01:00","alt":"Kooks ULTRA X-Pipe to OEM Exhaust. 2015-2026 Ford Mustang 5.0L V8","width":1440,"height":1440,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/117ff4ac039ec1e775b9a2ccc9d45b48.png?v=1791452503","variant_ids":[]},{"id":86449297031510,"product_id":11350217032022,"position":2,"created_at":"2026-10-08T10:41:40+01:00","updated_at":"2026-10-08T10:41:44+01:00","alt":"Kooks ULTRA X-Pipe to OEM Exhaust. 2015-2026 Ford Mustang 5.0L V8","width":1440,"height":1440,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/cd387fba7094bad5bd87c8804358ed96.png?v=1791452504","variant_ids":[]},{"id":86449297064278,"product_id":11350217032022,"position":3,"created_at":"2026-10-08T10:41:40+01:00","updated_at":"2026-10-08T10:41:44+01:00","alt":"Kooks ULTRA X-Pipe to OEM Exhaust. 2015-2026 Ford Mustang 5.0L V8","width":1440,"height":1440,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/bb1d318508426b385a6bfdb2bbc4aa3f.png?v=1791452504","variant_ids":[]}],"image":{"id":86449296998742,"product_id":11350217032022,"position":1,"created_at":"2026-10-08T10:41:40+01:00","updated_at":"2026-10-08T10:41:43+01:00","alt":"Kooks ULTRA X-Pipe to OEM Exhaust. 2015-2026 Ford Mustang 5.0L V8","width":1440,"height":1440,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/117ff4ac039ec1e775b9a2ccc9d45b48.png?v=1791452503","variant_ids":[]}}}