{"product_id":"milltek-large-bore-downpipe-for-ford-mustang-2-3-ecoboost-s550-fastback-ssxfd170","title":"Milltek Large Bore Downpipe for Ford Mustang 2.3 EcoBoost (S550 Fastback)","description":"\u003cp\u003eMilltek Large Bore Downpipe with integrated Hi-Flow Sports Catalyst — designed for use with OE cat-back exhaust systems. Mandrel-bent T304L stainless steel construction with significantly larger bore diameter than OEM, allowing improved exhaust scavenging and measurable performance gains.\u003c\/p\u003e\u003cp\u003eHand-finished construction throughout. Stage 2 ECU remap required to unlock full potential. Direct bolt-on fitment using OE hangers — no modification required. Engineered to eliminate restrictive factory catalytic converter while maintaining OEM+ fitment integrity.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment \u0026amp; Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFor use with OE cat-back exhaust systems only\u003c\/li\u003e\n\u003cli\u003eStage 2 ECU remap mandatory\u003c\/li\u003e\n\u003cli\u003eDirect factory fitment — no welding or modifications\u003c\/li\u003e\n\u003cli\u003eUses OEM mounting points and hangers\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e Milltek downpipes are developed and tested across a global product range, delivering proven performance gains without compromising reliability. \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\u003e2015-2017 Ford Mustang V6\u003c\/li\u003e\n\u003cli\u003e2015-2018 Ford Mustang Base\u003c\/li\u003e\n\u003cli\u003e2015-2018 Ford Mustang EcoBoost\u003c\/li\u003e\n\u003cli\u003e2015-2018 Ford Mustang EcoBoost Premium\u003c\/li\u003e\n\u003cli\u003e2015-2018 Ford Mustang GT\u003c\/li\u003e\n\u003cli\u003e2015-2018 Ford Mustang GT Premium\u003c\/li\u003e\n\u003cli\u003e2015-2018 Ford Mustang Shelby GT350\u003c\/li\u003e\n\u003cli\u003e2015-2018 Ford Mustang Shelby GT350R\u003c\/li\u003e\n\u003cli\u003e2015 Ford Mustang GT 50 Years Limited Edition\u003c\/li\u003e\n\u003cli\u003e2024-2025 Ford Mustang Dark Horse Premium\u003c\/li\u003e\n\u003cli\u003e2024-2026 Ford Mustang Base\u003c\/li\u003e\n\u003cli\u003e2024-2026 Ford Mustang Dark Horse\u003c\/li\u003e\n\u003cli\u003e2024-2026 Ford Mustang EcoBoost\u003c\/li\u003e\n\u003cli\u003e2024-2026 Ford Mustang EcoBoost Premium\u003c\/li\u003e\n\u003cli\u003e2024-2026 Ford Mustang GT\u003c\/li\u003e\n\u003cli\u003e2024-2026 Ford Mustang GT Premium\u003c\/li\u003e\n\u003cli\u003e2025 Ford Mustang GTD\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150847734046,"sku":"MILSSXFD170","price":1701.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXFD170_1.jpg?v=1791256519","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-large-bore-downpipe-for-ford-mustang-2-3-ecoboost-s550-fastback-ssxfd170","provider":"Signature Autohaus","version":"1.0","type":"link"}