{"product_id":"milltek-bmw-g90-m5","title":"Milltek 80mm Secondary Catalyst Bypass BMW G90 \/ G99 M5","description":"\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"height: 0px; overflow: hidden; padding-top: 56.25%; position: relative; width: 100%;\"\u003e\u003ciframe style=\"position: absolute; top: 0px; left: 0px; width: 100%; height: 100%;\" src=\"https:\/\/tube.rvere.com\/embed?v=H0wqyQSZ8VI\" title=\"YouTube video player\"\u003e\n        \u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEnhance the exhaust sound and flow characteristics of your BMW G90 M5 or G99 M5 Touring with the Milltek Sport 80mm Secondary Catalyst Bypass System. Engineered specifically for BMW's 4.4L twin-turbocharged hybrid V8, this performance exhaust upgrade replaces the factory secondary catalytic converter section to reduce exhaust restriction and deliver a more aggressive exhaust note.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eManufactured from \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epremium T304L stainless steel\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, the Milltek Sport Secondary Catalyst Bypass features \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e80mm (3.15-inch) mandrel-bent piping\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e designed to promote efficient exhaust gas flow. Its precision-engineered construction provides excellent durability, corrosion resistance, and consistent performance under demanding exhaust temperatures.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe system incorporates left and right secondary catalyst bypass pipes along with an \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eactive center section\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, designed to enhance the exhaust characteristics of the G90\/G99 M5 when paired with compatible Milltek performance exhaust components.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUnlike universal exhaust modifications, this system is specifically engineered to integrate with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMilltek Sport axle-back and downpipe exhaust systems\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Its vehicle-specific design provides precise alignment and utilizes the factory mounting locations and exhaust hangers for straightforward installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBy eliminating the factory secondary catalytic converters, the Milltek bypass allows more of the M5's twin-turbocharged V8 exhaust character to be heard, particularly during acceleration and higher engine speeds. The system is designed to complement Milltek's performance exhaust range, providing a more engaging exhaust experience.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned and manufactured in the United Kingdom, Milltek Sport exhaust components combine precision engineering, high-quality materials, and extensive performance exhaust development experience.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor BMW M5 owners seeking increased exhaust volume, improved exhaust flow, and premium stainless-steel construction, the Milltek Sport 80mm Secondary Catalyst Bypass provides an excellent addition to a compatible Milltek exhaust system.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eFitment Notes\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFits \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2025+ BMW M5 Sedan (G90)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with 4.4L twin-turbocharged hybrid V8\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFits \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2025+ BMW M5 Touring (G99)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e with 4.4L twin-turbocharged hybrid V8\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eDesigned for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNorth American Specification (NAS) and Rest of World (ROW)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e vehicles\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eSpecifically engineered for use with compatible \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMilltek Sport axle-back and downpipe exhaust components\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eIncludes adapters for connection to the Milltek axle-back exhaust\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNot designed for direct connection to the factory axle-back exhaust\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eUtilizes factory mounting locations and OEM exhaust hangers\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNo cutting or permanent vehicle modifications required for the specified Milltek configuration\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNot intended for UK\/European GPF\/OPF-equipped applications\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNot compatible with BMW F90 M5 or other BMW 5 Series models\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRemoves factory secondary catalytic converters\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eNot approved for emissions-controlled public-road use where catalytic converter removal is prohibited\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eProfessional installation recommended\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eIncluded\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMilltek left-hand secondary catalyst bypass pipe (MSBM459)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMilltek right-hand secondary catalyst bypass pipe (MSBM460)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMilltek active center section for NAS\/ROW vehicles (MSBM461)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMilltek adapters to compatible Milltek axle-back exhaust (F5178)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eRequired installation hardware as supplied by Milltek\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSold Separately:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMilltek Sport axle-back exhaust system\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMilltek Sport performance downpipes\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eProduct Specs\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eManufacturer: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMilltek Sport\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003ePart Number: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSSXBM1415\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eProduct Type: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSecondary Catalyst Bypass System\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVehicle Applications: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBMW G90 M5 \/ G99 M5 Touring\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eEngine: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e4.4L Twin-Turbocharged Hybrid V8\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eVehicle Specification: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNAS \/ ROW\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMaterial: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eT304L Stainless Steel\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eExhaust Diameter: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e80mm (3.15 Inches)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eConstruction: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMandrel-Bent Tubing\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eConfiguration: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSecondary Catalyst Bypass with Active Center Section\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFactory Secondary Catalytic Converters: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRemoved\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMilltek Axle-Back Compatibility: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eYes\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eMilltek Downpipe Compatibility: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eYes\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFactory Axle-Back Compatibility: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNo\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eFactory Mounting Points: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRetained\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCutting or Welding Required: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNo, With Specified Milltek Components\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eManufacturer-Estimated Installation Time: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2–3 Hours\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eManufacturer Race Product Classification: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNo\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eE-Mark Approval: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNo\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan\u003eCountry of Manufacture: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eUnited Kingdom\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eProduct Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e80mm high-flow exhaust design\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e reduces exhaust restriction and promotes improved exhaust gas flow from the M5's twin-turbocharged V8.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSecondary catalyst bypass configuration\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e provides a more pronounced exhaust note by eliminating the factory secondary catalytic converter section.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePremium T304L stainless-steel construction\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e offers excellent corrosion resistance, strength, and durability.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eIntegrated active center section\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is engineered to complement the exhaust characteristics of compatible Milltek performance systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDirect-fit Milltek exhaust compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e includes the necessary adapters for integration with compatible Milltek axle-back components.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePrecision-engineered installation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e utilizes factory mounting locations and OEM hangers without permanent modifications when installed with the specified Milltek exhaust configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":67842689859904,"sku":"SSXBM1415","price":2561.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/7587\/4624\/files\/Secondary_Catalyst_Bypass_For_Milltek_Axle_Back_and_Downpipes_6894c58ae4dc2_0.webp?v=1792676866","url":"https:\/\/www.forzamotorworks.com\/products\/milltek-bmw-g90-m5","provider":"Forza Motor Works","version":"1.0","type":"link"}