The COBB BMW 1-Series Cat-back Exhaust is designed to fit your 2008-2013 135i/is Coupe and Convertible! This exhaust utilizes a single 3" pipe, straight thru muffler and helmholtz chamber to quiet and reduce resonance of the exhaust gases as they exit your motor. It is unmatched in performance, with OEM fitment, innovative engineering and outstanding craftsmanship. Treat your BMW 1-Series to a COBB exhaust now!
- 3" 304 Stainless Steel Construction
- CNC Mandrel Bent Tubing with TIG Welds
- V-Band Clamp Connections for Infinite Adjustability
- Dual 3.5" Slash Cut Tips
- Helmholtz Chamber to Reduce Resonance
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