{"product_id":"mad-bmw-s58-3-5-fat-boy-downpipes-m2-m3-m4-g87-g80-g82-g83","title":"MAD BMW S58 3.5\" Fat Boy Downpipes M2 M3 M4 G87 G80 G82 G83","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 S58?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe factory downpipes restrict airflow and mute both power and sound — but a proper set of catless downpipes completely transforms how the car performs and feels.\u003c\/p\u003e\n\u003cp\u003eThe MAD 3.5” Fat Boy Catless Downpipes replace the restrictive OEM catalytic converters with the largest 3.5” piping available for the S58, engineered for maximum airflow, faster turbo spool, and increased power.\u003c\/p\u003e\n\u003cp\u003eLouder.\u003cbr\u003eFaster.\u003cbr\u003eUnrestricted.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy these Downpipes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBy eliminating the restrictive factory catalytic converters, these downpipes allow the turbos to spool faster and operate more efficiently — resulting in noticeable gains in power and throttle response.\u003c\/p\u003e\n\u003cp\u003eOn a tuned setup with stock turbos, you can expect gains of up to 30HP, with even more potential on upgraded turbo setups.\u003c\/p\u003e\n\u003cp\u003eThe integrated flex section helps reduce stress and unwanted vibration, ensuring proper fitment and long-term reliability.\u003c\/p\u003e\n\u003cp\u003eMaximum airflow.\u003cbr\u003eFaster spool.\u003cbr\u003eBuilt for real performance gains.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Direct bolt-on replacement for factory downpipes\u003cbr\u003e• Compatible with OEM and aftermarket exhaust systems\u003cbr\u003e• Professional installation recommended\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBMW S58 Platform:\u003c\/p\u003e\n\u003cp\u003e• G80 M3\u003cbr\u003e• G81 M3 Touring\u003cbr\u003e• G82 M4\u003cbr\u003e• G83 M4 Convertible\u003cbr\u003e• G87 M2\u003c\/p\u003e\n\u003cp\u003eCompatible with both left-hand drive and right-hand drive vehicles.\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• 3.5” Fat Boy Diameter (Largest available for S58)\u003cbr\u003e• 304 Stainless Steel Construction\u003cbr\u003e• Catless Design for Maximum Flow\u003cbr\u003e• Smooth Mandrel Bends\u003cbr\u003e• Integrated Flex Section for Reduced Stress\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• MAD 3.5” Fat Boy Catless Downpipes\u003cbr\u003e• Required Hardware\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cb\u003eWarranty \u0026amp; Returns\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e• Eligible for a 90-day return window if unused, uninstalled, and in original condition\u003cbr\u003e• Backed by a lifetime warranty on defects and fitment\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cb\u003eImportant Notes\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003e• Intended for off-road \/ motorsport use only\u003c\/span\u003e\u003cbr data-start=\"1330\" data-end=\"1333\"\u003e\u003cspan\u003e• Not legal for use on public roads, highways, or emissions-controlled vehicles\u003c\/span\u003e\u003cbr data-start=\"1412\" data-end=\"1415\"\u003e\u003cspan\u003e• \u003c\/span\u003e\u003cstrong data-start=\"1417\" data-end=\"1448\"\u003eDoes not ship to California\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e⸻\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAutomaz Approved\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you’re serious about performance on the S58 — this is where it starts.\u003c\/p\u003e\n\u003cp\u003eThese downpipes unlock the airflow, sound, and responsiveness that the factory setup holds back.\u003c\/p\u003e\n\u003cp\u003eOne of the most impactful upgrades you can make to the platform.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eEmissions Disclaimer:\u003cbr\u003e\u003c\/b\u003e\u003cbr\u003eThis product is \u003cb\u003enot legal for sale or use on pollution-controlled vehicles\u003c\/b\u003e operated on public roads, highways, or streets. It is \u003cb\u003eintended for off-road, race, or closed-course competition use only\u003c\/b\u003e, where such modifications are permitted.\u003c\/p\u003e\n\u003cp\u003eBy purchasing this product, you acknowledge and agree that:\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003eYou are \u003cb\u003eresponsible for compliance\u003c\/b\u003e with all applicable emissions laws and regulations.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003eMAD, Automaz Collective, and its affiliates \u003cb\u003edisclaim any liability\u003c\/b\u003e for improper or unlawful use of this product.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003e•\u003cspan class=\"Apple-tab-span\"\u003e \u003c\/span\u003eUse of this part on public roads may violate the \u003cb\u003eFederal Clean Air Act (42 U.S.C. § 7522)\u003c\/b\u003e and similar state laws.\u003c\/p\u003e\n\u003cp\u003ePlease check your local laws before purchase and installation.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"100%\" height=\"260\" src=\"https:\/\/www.youtube.com\/embed\/Y5DPvLjvZZ4\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Automaz Collective","offers":[{"title":"Default Title","offer_id":43382140993595,"sku":null,"price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5388\/1403\/files\/IMG_3431.jpg?v=1775348410","url":"https:\/\/automazcollective.com\/products\/mad-bmw-s58-3-5-fat-boy-downpipes-m2-m3-m4-g87-g80-g82-g83","provider":"Automaz Collective","version":"1.0","type":"link"}