{"product_id":"milltek-resonated-secondary-cat-bypass-for-bmw-g8x-m3-m4-ssxbm1267","title":"Milltek Resonated Secondary Cat Bypass for BMW G8X M3 M4","description":"\u003cp\u003eThe Milltek Axle Back Resonated Secondary Cat Bypass is engineered for BMW G8X M3 and M4 models. This system replaces the factory secondary catalyst with a resonated bypass pipe, designed to fit OE downpipes and Milltek Axle Back systems only. Direct factory fitment with OEM hangers — no modification required.\u003c\/p\u003e\n\u003cp\u003eConstructed from T304L stainless steel with mandrel-bent piping, the resonated design is tuned to the G8X platform's natural resonance point, delivering a refined yet sportier exhaust character at full throttle while minimizing drone in cruise. Pipe diameter: 3.00\" (76.2mm). Engineered to exhilarate without compromise.\u003c\/p\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW M3 G80 (2021–present)\u003c\/li\u003e\n\u003cli\u003eBMW M4 G82\/G83 (2021–present)\u003c\/li\u003e\n\u003cli\u003eRequires OE or Milltek downpipes\u003c\/li\u003e\n\u003cli\u003eCompatible with Milltek Axle Back systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e Built in-house from raw material to finished component. \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\u003e2021-2026 BMW M3 Competition\u003c\/li\u003e\n\u003cli\u003e2021-2026 BMW M4 Competition\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150745530654,"sku":"MILSSXBM1267","price":1475.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXBM1267_1.jpg?v=1791255307","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-resonated-secondary-cat-bypass-for-bmw-g8x-m3-m4-ssxbm1267","provider":"Signature Autohaus","version":"1.0","type":"link"}