Active Autowerke BMW M2 Competition F87 Equal Length Midpipe

The factory exhaust on the F87 M2 Competition has one significant flaw: its downpipes are unequal in length, so exhaust pulses from each side don't combine evenly. The result is a characteristic metallic, unpleasant tone that many drivers describe as sounding more like a lawnmower than a proper inline-6. Active Autowerke's Gen 2 Equal Length Midpipe was engineered specifically to eliminate this problem entirely.

Using a patented design paired with specially developed resonators, the midpipe equalises pipe length before the exhaust streams combine, letting the S55 finally sound the way it should, deep, smooth, and genuinely sporty. The Gen 2 version goes further, reducing the "2k buzz" and other unwanted resonances for improved refinement, while still retaining the aggressive, characterful tone underneath. Built from stainless steel and lighter than the OEM system, this midpipe doesn't just improve sound, it also supports genuine performance gains, faster turbo spool, better exhaust flow, and increased power through the low and mid rev range.

Works with: Active Autowerke's F-brace. If you're running catless (straight-through) downpipes, the resonated version is recommended to avoid excessive noise.

Why Choose This Equal Length Midpipe

• Patented equal-length design for genuinely even exhaust pulses
• Eliminates the S55's characteristic unpleasant resonance
• Gen 2 specially developed resonators (resonated option available for decat-equipped cars)
• Improved turbo spool and smoother throttle response
• Increased power through the low and mid rev range
• Lighter than the factory exhaust system
• 304 stainless steel construction, premium build quality throughout
• Fully compatible with the Active Autowerke F-brace
• Manufactured in the USA

Compatibility

• BMW F87 M2 Competition (2019-2021)
• BMW F87 M2 CS (2020)

Important: if you're running catless (straight-through) downpipes, we recommend the resonated version of this midpipe to avoid excessive noise.