BMW 135i Exhaust by MadDad

The volume of a 135i axleback exhaust in a power producing downpipe back setup. This is the 135i Exhaust you've been waiting for. A complete 135i exhaust from the downpipe back. Replacing the last two factory cats with replacement mini-resonators to help minimize in cabin drone. The 135i Whisper Series axleback section produces exotic car sounds without ever sounding outright loud. Multiple features to mitigate drone, including a mount for the factory vibration damper. Compare a MadDad(TM) EuroSport 135i Exhaust vs other exhausts and you'll find other companies axleback exhausts alone are often louder than this complete downpipe back setup. The MadDad(TM) EuroSport Downpipe back 135i exhaust gives you all of the sound character with none of the noise.