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The famous Whisper series exhaust system that has been serving turbocharged Subaru's for years now graces the BMW 135i. The Whisper EuroSport 135i Exhaust had been tuned to minimize cabin drone better than any other 135i exhaust on the market. MadDad is the ONLY manufactuer that offers you a 2 week money back gaurantee. Others make marketing claims, MadDad gaurantees them.  
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MadDad(TM) EuroSport Street Series BMW 135i Exhaust
List Price: $649.95
Our Price: $599.95
You save $50.00!

The perfect exhaust choice for the BMW 135i enthusiast that enjoys more than just better sound character but much more volume as well. The EuroSport Street series exhaust might look like a plug-and-play straight pipe, which would be over the top loud and rattle your brain on the highway....but that is reserved for other exhausts that might look similiar to a MadDad(TM). The EuroSport Street series uses a specially designed MadDad(TM) TuneCore baffle that minimizes the lower rpm droning that haunts so many exhausts of this style. That means you can cruise on the highway without having to hunt for a different gear to drive out of the drone range. It also means owners of automatics that tend to drive in the lower rpm range more often, fianlly have an exhaust that works for them. You'll experience a fantastic low bass rumble from idle to approx. 3000 rpm. Let it rip above 3000 rpm and this exhaust transforms, sounding like a roaring italian exotic. Never in your wildest dreams did you think a muffler-less exhaust design could handle both requirements this well...truley minimizing highway drone yet letting out a high rpm scream that rivals the exotics. Only from the minds at MadDad(TM).
MadDad Whisper EuroSport 135i
List Price: $799.95
Our Price: $749.95
Sale Price: $689.95
You save $110.00!

The famous Whisper series exhaust re-engineered for the twin-turbo BMW 135i
MadDad EuroSport 135i Midpipe
List Price: $749.95
Our Price: $689.95
You save $60.00!



MadDad BMW 135i catless midpipe use custom made mini-resonators in a staggered layout positioned just like the factory cats. Combined with un-polished T304SS construction this pipe looks like it could have been an OEM factory performance option rather than an aftermarket piece...and that is the point.
   
 
BMW 135i Exhaust and performance parts.