BMW M1 Downpipes

View all M1 Downpipes products

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	Evolution Racewerks Sports Series 4-Inch High Flow Catted Downpipe BMW M135i Single Turbo N55 Engine F20 \| F21 12-14 Model Number: BM-EXH007 View Price Restrictions in the exhaust system robs horsepower and torque especially on turbocharged cars. Thus, removing as much exhaust flow restrictions will increase horsepower and torque significantly. The factory catalytic converter found in the factory downpipe is a big culprit of this and is a major exhaust flow restriction. The factory catalytic converter is made up of catalyst material formed into "honeycomb" weaves. Exhaust gas must pass through these tiny "honeycomb" weaves on their way to the e...
	Evolution Racewerks Competition Series 4-Inch Catless Downpipe BMW M135i Single Turbo N55 Engine F20 \| F21 12-14 Model Number: BM-EXH007 View Price Evolution Racewerks Competition Series Catless Downpipes is constructed out of 100% 304 grade stainless steel and utilize mandrel bent piping. They are 100% TIG welded by Evolution Racewerks' in house fabricators and built in the USA. The factory turbocharger turbine housing utilizes a V-Band flange which Evolution Racewerks have duplicated and CNC machined cut out of billet 304 stainless steel. Stainless Steel CNC machined O2 sensor and laser cut brackets are TIG welded using stainless steel...
	Cobb Tuning Stainless Steel Catted Downpipes BMW M1 N54 11-12 Model Number: 5B1202 View Price Free up your BMW's N54 engine with COBB 3" Downpipes! A direct replacement for the factory downpipes, COBB's feature 200 cell high flow catalytic converters and 304 stainless steel tubing. Custom cast bell mouths ensure perfect OEM-like fitment. Fitment verified for left-hand drive vehicles only. These features combine to provide a free flowing exhaust outlet for high energy exhaust gases to reduce back pressure and increase turbo efficiency. Off-the-shelf mapping available for the Accessport.Fe...