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.                                                                                                                              

Pure and simple, you're looking at the best-sounding M3/M4 exhaust system on the market. Don't just take our word for it, though...

"Fabspeed’s exhaust for the 2015 M3 and M4 might be the best sounding one yet" - AutoEvolution

"Fabspeed manages to make the BMW F80 M3 & F82 M4 S55 exhaust note not suck while gaining 20+ horses with their Valvetronic system" - BoostAddict

"Fabspeed's Valvetronic Exhaust improves the quality of the exhaust sound dramatically" - BoostAddict

FEATURES:

• Fits all BMW F8x M3 & M4 sedan / coupe vehicles (2015+) - Does not fit F83 convertibles
• Includes Deluxe Quad-Style Tips in a Polished Chrome, Black Chrome, or Single Wall Brushed finish
• 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
• Integrated muffler valves include machined mounts for the factory actuators, allowing retention of factory valve functionality
• Adds 19 whp and 31 ft/lbs of torque at 3300 RPM

POWER GAINS:

• Peak Power
• Stock= 410 whp / 400 ft/lbs
• Exhaust = 419 whp / 414 ft/lbs
• Maximum Gains
• 3300 RPM = +19whp / +31ft/lbs

WEIGHT:

• Factory BMW System: 69lbs
• Fabspeed System: 62lbs
• Rear Section: 33lbs
• Mid-Pipes: 29lbs