{"product_id":"milltek-sport-bmw-g8x-m3-m4-gpf-opf-bypass-non-resonated-to-milltek-axle-back-only","title":"Milltek Sport BMW G8X M3\/M4 - GPF\/OPF Bypass - Non Resonated to Milltek Axle Back Only","description":"\u003cp\u003eRemove the exhaust restriction of the factory GPF\/OPF on your BMW M3 or M4 G8X with this Milltek Sport GPF\/OPF Bypass Pipe. The Gasoline\/Otto Particulate Filter (GPF\/OPF) fitted to OPF-equipped G8X models acts almost like a secondary catalyst, significantly restricting exhaust flow and muffling the exhaust note. This bypass pipe eliminates the GPF\/OPF entirely, restoring unrestricted flow through the system.\u003c\/p\u003e\u003cp\u003eDesigned to fit to a Milltek Sport Axle Back System, this non-resonated bypass pipe delivers a significant improvement in exhaust sound quality and a noticeable reduction in back pressure. Requires a Stage 2 ECU remap or an OPF\/GPF bypass module.\u003c\/p\u003e\u003cp\u003eManufactured from 304L aircraft-grade stainless steel and made in the UK. A race product intended for track use.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFitment: BMW M3 G80\/G81 (OPF\/GPF equipped, 2020+) \u0026amp; M4 G82 (OPF\/GPF equipped, 2020+)\u003c\/li\u003e\n\u003cli\u003ePipe diameter: 101.60mm\u003c\/li\u003e\n\u003cli\u003eFits to: Milltek Axle-Back System\u003c\/li\u003e\n\u003cli\u003eRace product: Yes\u003c\/li\u003e\n\u003cli\u003eRequires: Stage 2 ECU remap or OPF\/GPF bypass module\u003c\/li\u003e\n\u003cli\u003eFitting time: 1.5–2 hours\u003c\/li\u003e\n\u003cli\u003eMade in the UK\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSKU: SSXBM1337\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":58335694619008,"sku":"SSXBM1337","price":897.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/7557\/5573\/files\/SSXBM1337_1.jpg?v=1782477697","url":"https:\/\/stringtheorygarage.com\/products\/milltek-sport-bmw-g8x-m3-m4-gpf-opf-bypass-non-resonated-to-milltek-axle-back-only","provider":"String Theory Garage","version":"1.0","type":"link"}