Active Autowerke BMW E9X M3 Signature Rear Gen 2 Exhaust
This system uses factory style flanges making it a complete bolt on system that requires no cutting or welding. The system is a straight-through design providing substantial improvements to gas flow over the factory exhaust.
The sound is unobtrusive, with a rich mellow tone and delivers a solid 5+hp, with key gains in the mid-range. In addition, the Active Autowerke E9X M3 Signature Exhaust system features large 3" piping for maximum exhaust flow while maintaining enough back-pressure to result in horsepower increases across the entire RPM range.
The factory E9X M3 muffler features a Noise Canceling Chamber inside the muffler and Active Autowerke has retained this feature by adding two custom Active Autowerke noise canceling chambers (NCC) on each muffler to reduce/minimize the drone (the 'booming' noise some muffler emit at cruising speeds, ~3500 rpm).
The Active Autowerke E9X M3 Signature Exhaust System provides increase in horsepower, great sound and appearance making it a must for the true M3 enthusiasts.
FEATURES:
Large 3-inch mandrel bent piping for maximum flow
Durable, 100% 304 brushed stainless steel
Double-walled 76mm Signature stainless tips and adjustable embossed with the Active Autowerke logo
Revolutionary NCC -Noise Cancelling Chamber
Gains of 5+ HP over stock configuration; Additional HP with our programmed software
BMW factory style hardware makes a truly easy installation with no need for cutting or re-welding
Weighs 40 Lbs vs. the factory of 55.1 Lbs.
Fitment for Coupe,Convertible and Sedans
Two year warranty with free tech support


⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov