Active Autowerke Gen 2 Equal Length Mid-Pipe - M3 / M4 (G80/G82)

The Gen 2 equal-length mid-pipe for the G80 M3 and G82 M4 adds resonators that Active Autowerke developed with its factories. They target the raspy edge in the exhaust note while leaving the overall volume largely where it was.

What you get

• Gen 2 equal-length mid-pipe.
• Purpose-built resonators to take out rasp with minimal loss of volume.
• Reduced "2k buzz" and cold-start rattle, according to Active Autowerke.
• Two versions: mid-pipe only, or with an additional resonator.

Good to know

• With aftermarket downpipes, Active Autowerke recommends the resonated version. Stock downpipes can also show a little rasp.
• Tested only with stock and Active downpipes and rear exhausts. Active Autowerke does not guarantee fitment or results with other rear exhausts.
• Part of Active Autowerke's Motorsport Collection, which the brand sells for race and off-road use only.

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.