{"product_id":"mbs-3-inch-catless-downpipes-bmw-f80-m3-f82-f83-m4-f87-m2-competition-s55","title":"MBS 3-Inch Catless Downpipes | BMW F80 M3 | F82\/F83 M4 | F87 M2 Competition | S55","description":"\u003ch3\u003eMBS 3-Inch Catless Race Downpipes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBMW F80 M3 | F82\/F83 M4 | F87 M2 Competition\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eImprove exhaust flow, turbocharger response, and sound from your S55-powered BMW with the MBS 3-Inch Catless Race Downpipes.\u003c\/p\u003e\n\u003cp\u003eDesigned to replace the restrictive factory catalytic downpipes, this system significantly reduces exhaust back pressure and supports quicker turbo spool, sharper throttle response, and a deeper, more aggressive exhaust note.\u003c\/p\u003e\n\u003cp\u003eUnlike downpipes that narrow significantly toward the outlet, the MBS design maintains a full three-inch diameter through most of the piping to support increased exhaust flow. Each downpipe is manufactured from SS304 stainless steel and features a cast stainless-steel V-band-to-pipe transition for strength, proper fitment, and dependable performance.\u003c\/p\u003e\n\u003cp\u003eWhen combined with compatible engine tuning, the manufacturer estimates potential gains of up to approximately 25 horsepower and 30 lb-ft of torque. Actual results will vary based on tuning, fuel, supporting modifications, vehicle condition, and environmental conditions.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFull three-inch catless downpipe design\u003c\/li\u003e\n\u003cli\u003eHelps reduce restrictive factory exhaust back pressure\u003c\/li\u003e\n\u003cli\u003eSupports quicker turbo spool and improved response\u003c\/li\u003e\n\u003cli\u003eProduces a deeper and more aggressive exhaust note\u003c\/li\u003e\n\u003cli\u003eSS304 stainless-steel construction\u003c\/li\u003e\n\u003cli\u003eCast stainless-steel V-band-to-pipe transitions\u003c\/li\u003e\n\u003cli\u003eMaintains three-inch piping through most of the system\u003c\/li\u003e\n\u003cli\u003ePrecision-manufactured for vehicle-specific fitment\u003c\/li\u003e\n\u003cli\u003eCompatible with S55-powered BMW M vehicles\u003c\/li\u003e\n\u003cli\u003eManufacturer-estimated gains of up to 25 horsepower and 30 lb-ft with compatible tuning\u003c\/li\u003e\n\u003cli\u003eDesigned for performance and competition-focused applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW M3 F80 — S55 engine\u003c\/li\u003e\n\u003cli\u003eBMW M4 Coupe F82 — S55 engine\u003c\/li\u003e\n\u003cli\u003eBMW M4 Convertible F83 — S55 engine\u003c\/li\u003e\n\u003cli\u003eBMW M2 Competition F87 — 2019–2021, S55 engine\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFitment should be confirmed using the vehicle’s VIN and engine configuration before ordering.\u003c\/p\u003e\n\u003ch3\u003eImportant Notice\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis product is not street legal and is intended for closed-course competition or off-road use only.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRemoving factory catalytic converters may cause:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA check-engine light\u003c\/li\u003e\n\u003cli\u003eIncreased emissions\u003c\/li\u003e\n\u003cli\u003eIncreased exhaust odor\u003c\/li\u003e\n\u003cli\u003eFailure of state or federal emissions inspections\u003c\/li\u003e\n\u003cli\u003ePossible warranty or legal concerns\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProper engine tuning may be required. The purchaser is responsible for confirming all applicable local, state, and federal laws before ordering or installing this product.\u003c\/p\u003e\n\u003ch3\u003eAvailability\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable to Order\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eContact Uproar Customs for current inventory and estimated lead time.\u003c\/p\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003eProfessional installation by an experienced BMW technician is strongly recommended. Exhaust gaskets, clamps, hardware, and surrounding components should be inspected during installation.\u003c\/p\u003e\n\u003cp\u003eUproar Customs does not provide installation instructions, tuning services, emissions assistance, or technical support for self-installation.\u003c\/p\u003e","brand":"Uproar Customs","offers":[{"title":"Default Title","offer_id":47278992130217,"sku":null,"price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0701\/1575\/4153\/files\/FullSizeRender_ffdc33cf-d3e5-4a77-b2c6-c86ff5d22f9a-1_jpg.webp?v=1784659032","url":"https:\/\/www.uproarcustoms.com\/products\/mbs-3-inch-catless-downpipes-bmw-f80-m3-f82-f83-m4-f87-m2-competition-s55","provider":"Uproar Customs","version":"1.0","type":"link"}