{"product_id":"milltek-80mm-opfgpf-back-exhaust-bmw-g8x-m3-m4-polished-tips-ssxbm1317","title":"Milltek 80mm OPF\/GPF Back Exhaust | BMW G8X M3 M4 - Polished Tips","description":"\u003cp\u003eMilltek OPF\/GPF-Back exhaust system with centre resonator bypass for BMW G8X M3 and M4 (late 2018+). Direct factory fitment; OE particulate filter removal required. Hand-finished T304L stainless steel construction with mandrel-bent piping and CNC-formed GT-115 polished trim tips.\u003c\/p\u003e\n\u003cp\u003eThe OPF\/GPF filter reduces emissions but constrains exhaust tone. This system restores the M3\/M4 signature character by routing exhaust through a resonator bypass, engineered to recover full-throttle definition while maintaining street-legal operation. Centre-exit configuration preserves OEM aesthetics. No additional hangers or brackets required.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eT304L stainless steel, hand-finished\u003c\/li\u003e\n\u003cli\u003eMandrel-bent pipe work for flow optimization\u003c\/li\u003e\n\u003cli\u003eCentre resonator bypass system\u003c\/li\u003e\n\u003cli\u003eGT-115 polished stainless steel trim tips\u003c\/li\u003e\n\u003cli\u003eOEM+ fitment using factory mounting points\u003c\/li\u003e\n\u003cli\u003eOE particulate filter removal required\u003c\/li\u003e\n\u003cli\u003eBMW G8X M3 (S58 engine) direct fit\u003c\/li\u003e\n\u003cli\u003eBMW G8X M4 (S58 engine) direct fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e Engineered to restore the M3\/M4's performance tone without compromise to build quality or fitment precision. \u003c\/p\u003e\n\u003cp\u003eFits OE system.\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","brand":"Milltek","offers":[{"title":"Default Title","offer_id":51360596656351,"sku":"SSXBM1317","price":3976.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8496\/9183\/files\/SSXBM1317_1.jpg?v=1789003143","url":"https:\/\/egtuning.com\/products\/milltek-80mm-opfgpf-back-exhaust-bmw-g8x-m3-m4-polished-tips-ssxbm1317","provider":"Egor's Garage Tuning ","version":"1.0","type":"link"}