{"product":{"id":11350205464918,"title":"Kooks Mustang GT \/ GT500 2-1\/2-inch Cat-Back | 11304150","body_html":"\u003ch2\u003eEnjoy the V8 sound with a polished rear exhaust finish\u003c\/h2\u003e\u003cp\u003eThis Kooks cat-back gives your Mustang a stainless rear exhaust upgrade with polished oval mufflers and 4\" tips. The 2-1\/2\" pipework connects at the OEM point, making it a rear upgrade you can fit before planning a header conversion.\u003c\/p\u003e\u003cp\u003eSKU: 11304150\u003c\/p\u003e\u003ch2\u003eKeep the factory front arrangement\u003c\/h2\u003e\u003cp\u003eThe system joins the OEM exhaust using the existing clamps. It also connects to a Kooks X-pipe or H-pipe with the same 2-1\/2\" outlet, giving you a compatible front-upgrade route later.\u003c\/p\u003e\u003ch2\u003eChoose for the GT and GT500 years\u003c\/h2\u003e\u003cp\u003eThe application is 2005-2009 GT 4.6 and 2007-2009 GT500 5.4. Mandrel-bent 16-gauge 304 stainless tubing, polished oval mufflers and polished tips form the rear system.\u003c\/p\u003e\u003ch2\u003eMatching products\u003c\/h2\u003e\u003cp\u003eThe \u003ca href=\"https:\/\/hooniesadrenaline.co.uk\/products\/kooks-11304300?variant=55646892458326\"\u003efull 3-inch rear exhaust\u003c\/a\u003e is an alternative for the same supported Mustang years when you have Kooks X\/H-pipes with full 3-inch outlets. It is not the direct OEM-front route.\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\u003e2005-2009\u003c\/td\u003e\n\u003ctd\u003eFord Mustang GT\u003c\/td\u003e\n\u003ctd\u003e4.6L V8\u003c\/td\u003e\n\u003ctd\u003e11304150\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007-2009\u003c\/td\u003e\n\u003ctd\u003eFord Mustang Shelby GT500\u003c\/td\u003e\n\u003ctd\u003e5.4L V8\u003c\/td\u003e\n\u003ctd\u003e11304150\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\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e11304150\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003e2005-2009 Mustang GT 4.6L; 2007-2009 GT500 5.4L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e16-gauge 304 stainless steel; mandrel-bent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePipe diameter \/ interface\u003c\/td\u003e\n\u003ctd\u003e2-1\/2\" \/ OEM connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMufflers \/ tips\u003c\/td\u003e\n\u003ctd\u003ePolished stainless oval mufflers; 4\" polished tips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlternative front route\u003c\/td\u003e\n\u003ctd\u003eKooks X-pipe \/ H-pipe with 2-1\/2\" outlets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamps\u003c\/td\u003e\n\u003ctd\u003eOEM clamps reused\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\u003eDo I have to fit headers too?\u003c\/h3\u003e\u003cp\u003eThe cat-back connects to the OEM exhaust, so it can be a rear-only upgrade.\u003c\/p\u003e\u003ch3\u003eWill it join a full 3-inch crossover?\u003c\/h3\u003e\u003cp\u003eThis system uses the 2-1\/2\" interface. Choose the 3\" rear system for a crossover requiring that outlet.\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 Systems","created_at":"2026-10-08T10:41:00+01:00","handle":"kooks-11304150","updated_at":"2026-10-11T10:15:08+01:00","published_at":"2026-10-09T13:44:00+01:00","template_suffix":null,"published_scope":"global","tags":"brand:kooks, cat:exhausts, dept:performance-parts, fits:ford-mustang, make:ford, type:exhaust-system","variants":[{"id":55646892294486,"product_id":11350205464918,"title":"Default Title","price":"1622.91","sku":"11304150","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-11T10:15:08+01:00","taxable":true,"barcode":"842422181673","grams":19958,"image_id":null,"weight":19.958,"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":14512386343254,"product_id":11350205464918,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":86449192206678,"product_id":11350205464918,"position":1,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-08T10:41:03+01:00","alt":"Kooks 05-09 Mustang GT\/07-09 GT500. 2-1\/2\" SS Cat-Back Exhaust w\/ Oval Mufflers","width":1080,"height":1080,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/1a3f8e4c51e7e8074a9d958ae43b1bd0.png?v=1791452463","variant_ids":[]},{"id":86449192239446,"product_id":11350205464918,"position":2,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-08T10:41:03+01:00","alt":"Kooks 05-09 Mustang GT\/07-09 GT500. 2-1\/2\" SS Cat-Back Exhaust w\/ Oval Mufflers","width":1080,"height":1080,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/bc061036fd0a0e4669bf90c92e23233f.png?v=1791452463","variant_ids":[]},{"id":86449192272214,"product_id":11350205464918,"position":3,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-08T10:41:03+01:00","alt":"Kooks 05-09 Mustang GT\/07-09 GT500. 2-1\/2\" SS Cat-Back Exhaust w\/ Oval Mufflers","width":1080,"height":1080,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/912adf043d44ff276466b85f9572e430.png?v=1791452463","variant_ids":[]}],"image":{"id":86449192206678,"product_id":11350205464918,"position":1,"created_at":"2026-10-08T10:41:00+01:00","updated_at":"2026-10-08T10:41:03+01:00","alt":"Kooks 05-09 Mustang GT\/07-09 GT500. 2-1\/2\" SS Cat-Back Exhaust w\/ Oval Mufflers","width":1080,"height":1080,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/1a3f8e4c51e7e8074a9d958ae43b1bd0.png?v=1791452463","variant_ids":[]}}}