{"product_id":"milltek-80mm-secondary-catalyst-bypass-for-bmw-5-series-m5-4-4l-twin-turbo-hybrid-g90-g99-nas-row-spec-vehicles-ssxbm1415","title":"Milltek 80mm Secondary Catalyst Bypass for BMW 5 Series M5 4.4l Twin Turbo Hybrid G90 \u0026 G99 (NAS\/ROW Spec Vehicles)","description":"\u003cp\u003eMilltek 80mm Axle Back Secondary Catalyst Bypass system engineered for use with Milltek Axle Back and Downpipe exhausts. Hand-finished T304L stainless steel construction with OEM+ fitment and direct bolt-on installation. Designed to optimize exhaust flow and acoustic character when paired with Milltek performance systems.\u003c\/p\u003e\u003cp\u003ePrecision mandrel-bent tubing and CNC-formed components ensure seamless integration. T304L stainless steel resists corrosion and thermal stress. No modification required — uses factory mounting points and OEM hangers for direct fitment.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Milltek Axle Back exhaust systems\u003c\/li\u003e\n\u003cli\u003eCompatible with Milltek Downpipe platforms\u003c\/li\u003e\n\u003cli\u003eHand-finished T304L stainless steel construction\u003c\/li\u003e\n\u003cli\u003eMandrel-bent tubing for optimal flow\u003c\/li\u003e\n\u003cli\u003eOEM+ direct bolt-on installation\u003c\/li\u003e\n\u003cli\u003eFactory mounting point fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e Engineered to Exhilarate. \u003c\/p\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\u003e2025-2026 BMW M5 Base\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150805266718,"sku":"MILSSXBM1415","price":2561.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/Secondary_Catalyst_Bypass_For_Milltek_Axle_Back_and_Downpipes_6894c58ae4dc2_0.webp?v=1791255683","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-80mm-secondary-catalyst-bypass-for-bmw-5-series-m5-4-4l-twin-turbo-hybrid-g90-g99-nas-row-spec-vehicles-ssxbm1415","provider":"Signature Autohaus","version":"1.0","type":"link"}