{"product_id":"milltek-active-valved-cat-back-for-ford-mustang-5-0-dark-horse-cerakote-black-tips-ssxfd421","title":"Milltek Active Valved Cat-Back for Ford Mustang 5.0 Dark Horse, Cerakote Black Tips","description":"\u003cp\u003eMilltek Race Active Valved Cat-Back exhaust system for Ford Mustang 5.0 V8 (Dark Horse, Mach 1). Hand-finished T304L stainless steel construction with mandrel-bent piping, H-pipe configuration, and Cerakote Black GT-115 4.5-inch tips. OEM+ fitment using factory hangers-no modification required.\u003c\/p\u003e\u003cp\u003eVacuum-actuated valve opens at full throttle to deliver engineered tone character; closed-loop operation minimizes drone during cruise. CNC-formed tip collars, TIG-welded construction throughout. Direct bolt-on installation to OEM cat-back position. Dyno-proven power delivery with signature Milltek sound calibration.\u003c\/p\u003e\n\u003cp\u003eDesigned in Tennessee and manufactured in the UK with 40+ years of performance exhaust heritage. Tested on the Tail of the Dragon.\u003c\/p\u003e\n\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\n\u003cul class=\"fitment-list\"\u003e\n\u003cli\u003e2021-2023 Ford Mustang Mach 1\u003c\/li\u003e\n\u003cli\u003e2024-2026 Ford Mustang Dark Horse\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150950330654,"sku":"MILSSXFD421","price":3644.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXFD421_1.jpg?v=1791257170","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-active-valved-cat-back-for-ford-mustang-5-0-dark-horse-cerakote-black-tips-ssxfd421","provider":"Signature Autohaus","version":"1.0","type":"link"}