{"product_id":"mad-f9x-s63r-fatboy-primary-downpipes-bmw-m5-m8-f90-f92","title":"MAD F9X S63R Fatboy Primary Downpipes – BMW M5 \/ M8 (F90\/F92)","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cb\u003eIn Stock:\u003c\/b\u003e\u003cspan\u003e Ships in 1-2 business days\u003c\/span\u003e\u003cbr\u003e\u003cb\u003eAvailable to Order:\u003c\/b\u003e\u003cspan\u003e Ships in 3-4 Weeks\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLooking to unlock the full potential of your F9x?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe factory primary downpipes restrict exhaust flow and hold back the sound and performance of your twin-turbo V8.\u003c\/p\u003e\n\u003cp\u003eThe MAD FATBOY Catless Primary Downpipes take a different approach. Engineered to accommodate the largest possible piping diameter between the factory flanges, they maximize exhaust flow without compromising fitment.\u003c\/p\u003e\n\u003cp\u003eMore airflow. More power. Unrestricted performance.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy These Downpipes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMAD designed the FATBOY Primary Downpipes to maximize the available space between the factory flanges, creating a larger, less restrictive exhaust path for the S63R engine.\u003c\/p\u003e\n\u003cp\u003eBy eliminating the restrictive factory catalytic converters, these downpipes improve exhaust flow, reduce backpressure, and allow the turbos to operate more efficiently.\u003c\/p\u003e\n\u003cp\u003eMAD advertises gains of up to 30 HP on stock turbos, with additional potential on upgraded turbo setups. Actual gains depend on your vehicle's configuration and tuning.\u003c\/p\u003e\n\u003cp\u003eThe integrated flex section helps reduce stress and unwanted vibration, while the smooth mandrel-bent construction promotes efficient exhaust flow.\u003c\/p\u003e\n\u003cp\u003eMaximum airflow. Faster turbo response. Built for serious performance.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eDirect bolt-on replacement for factory primary downpipes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eCompatible with the factory exhaust system\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eNo cutting or welding required\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eIncludes necessary installation hardware and gaskets\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eProfessional installation recommended\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBMW S63R Platform:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e2018+ BMW F90 M5\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e2019+ BMW F92 M8\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eFATBOY oversized piping designed for maximum available diameter between the flanges\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003ePremium T304 Stainless Steel Construction\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eCatless Design for Maximum Exhaust Flow\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eSmooth Mandrel Bends to Minimize Turbulence\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eIntegrated Flex Section for Reduced Stress and Vibration\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003ePrecision-Engineered Factory Flange Connections\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eMAD FATBOY Catless Primary Downpipes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eRequired Installation Hardware\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eGaskets\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty \u0026amp; Returns\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eBacked by MAD's limited lifetime warranty against manufacturing defects and fitment issues\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eWarranty applies to the original purchaser and is subject to MAD's terms\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eProducts must be unused, uninstalled, and in their original condition to qualify for a standard return\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eIntended for off-road \/ motorsport use only\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eNot legal for use on pollution-controlled vehicles operated on public roads\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eRemoving the factory catalytic converters may trigger a check engine light\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eVerify emissions regulations and vehicle compatibility before purchasing\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003ch2\u003eAutomaz Approved\u003c\/h2\u003e\n\u003cp\u003eIf you're looking to maximize exhaust flow and unlock additional performance from your S63R, the MAD FATBOY Primary Downpipes deliver an oversized, unrestricted design engineered specifically for the F90 M5 and F92 M8.\u003c\/p\u003e\n\u003cp\u003eWith T304 stainless steel construction, integrated flex sections, and direct bolt-on fitment, these downpipes offer a purpose-built solution for high-performance applications.\u003c\/p\u003e\n\u003cp\u003eMore flow. More sound. More potential.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003ch2\u003eEmissions Disclaimer\u003c\/h2\u003e\n\u003cp\u003eThis product is \u003cspan\u003enot legal for sale or use on pollution-controlled vehicles\u003c\/span\u003e operated on public roads, highways, or streets. It is \u003cspan\u003eintended for off-road, race, or closed-course competition use only\u003c\/span\u003e, where such modifications are permitted.\u003c\/p\u003e\n\u003cp\u003eBy purchasing this product, you acknowledge and agree that:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eYou are responsible for compliance with all applicable emissions laws and regulations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eMAD, Automaz Collective, and their respective affiliates disclaim liability for improper or unlawful use of this product, to the extent permitted by law.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003eUse of this part on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Automaz Collective","offers":[{"title":"Default Title","offer_id":44307051085883,"sku":null,"price":339.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5388\/1403\/files\/PhotoRoom_20230901_133843__02153.webp?v=1790485052","url":"https:\/\/automazcollective.com\/products\/mad-f9x-s63r-fatboy-primary-downpipes-bmw-m5-m8-f90-f92","provider":"Automaz Collective","version":"1.0","type":"link"}