The ultimate catback exhaust system for the Ultimate Driving Machine includes Fabspeed’s high performance Valvetronic rear muffler and exclusive “Double-X” midpipe for the perfect combination of sound and power.
Fits all BMW F8x M3 & M4 sedan / coupe vehicles (2015+) – Does not fit F83 convertibles
World’s first and only “Double-X” midpipe design includes two “x” sections for increased exhaust scavenging, resulting in the smoothest possible exhaust note with the least amount of rasp
Constructed in-house at Fabspeed from 16ga / .065″ thick CNC mandrel-bent T304L stainless steel in 2.75″ diameter for the best durability
Adds 19 whp and 31 ft/lbs of torque at 3300 RPM
Integrated muffler valves include machined mounts for the factory actuators, allowing retention of factory valve functionality
All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
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