Transform the sound and soul of your BMW F87 M2C or M2CS with the Gen 2 Active Autowerke Equal Length Mid-Pipe – now engineered with proprietary resonators for a refined, exotic exhaust tone. Designed to correct the S55’s notorious “weed-eater” pitch, this mid-pipe uses a patented crossover and sinusoidal pipe design to equalize pulse timing before mixing, eliminating the rasp and buzz while preserving volume and power. The result is a crisp, balanced growl that’s unmistakably high-performance—what the S55 should’ve sounded like from the factory.

Whether you’re carving through canyon roads or pulling into a meet, this system delivers head-turning acoustics and throttle response in one elegant, bolt-on upgrade. Paired with the included Active F-Brace, and tuned to complement both stock and Active rear sections and downpipes, this mid-pipe is the definitive choice for enthusiasts looking to elevate their driving experience. For cars running MPE, CS exhausts, or aftermarket downpipes, we strongly recommend choosing the resonated version to tame midrange rasp.

Product Details:

  • Precision-engineered equal length mid-pipe for F87 M2 Competition / M2 CS
  • Includes Active Autowerke F-Brace for added chassis rigidity
  • Proprietary Gen 2 resonators reduce rasp with minimal volume loss
  • Eliminates the 2k rpm “buzz” found in non-resonated systems
  • Patented design corrects pulse timing for true inline-6 exhaust harmonics
  • Lightweight construction improves throttle response and reduces system mass
  • Compatible with stock and Active downpipes and rear sections
  • Made in the USA – industry-leading quality backed by 40+ years of BMW expertise
  • US Patent 11248511 / UK & EU Patent 3882441
  • $90 flat-rate shipping (continental US)
  • Off-road use only – waiver signature required before shipment