{"product_id":"milltek-large-bore-downpipe-for-mini-cooper-s-f55-f56-ssxm409","title":"Milltek Large Bore Downpipe for Mini Cooper S F55 F56","description":"\u003cp\u003eMilltek Large Bore Downpipe with Hi-Flow Sports Catalyst for Mini Cooper S F55\/F56. Direct fitment designed exclusively for use with Milltek Cat-Back exhaust systems. Mandrel-bent T304L stainless steel construction increases diameter beyond OEM specification, allowing greater exhaust gas flow and reducing backpressure for measurable performance gains.\u003c\/p\u003e\n\u003cp\u003eThe integrated Hi-Flow Sports Cat combines secondary catalyst efficiency with acoustic tuning. Stage 2 ECU remap required to unlock full potential. Hand-finished construction ensures OEM+ fitment using factory hanger points—no modifications necessary. Engineered for closed-circuit performance use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eT304L stainless steel, mandrel-bent large bore design\u003c\/li\u003e\n\u003cli\u003eHi-Flow Sports Cat included\u003c\/li\u003e\n\u003cli\u003eDirect factory fitment, OEM hanger compatible\u003c\/li\u003e\n\u003cli\u003eWorks exclusively with Milltek Cat-Back systems\u003c\/li\u003e\n\u003cli\u003eStage 2 ECU remap required\u003c\/li\u003e\n\u003cli\u003eHand-finished construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDesigned and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.\u003c\/p\u003e\n\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\n\u003cul class=\"fitment-list\"\u003e\n\u003cli\u003e2014-2026 Mini Cooper S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60151376544030,"sku":"MILSSXM409","price":1576.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXM409_1.jpg?v=1791260237","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-large-bore-downpipe-for-mini-cooper-s-f55-f56-ssxm409","provider":"Signature Autohaus","version":"1.0","type":"link"}