Cat-Back Exhaust 3-Inch Stainless Steel

The Cobb Tuning Cat Back Exhaust is a meticulously engineered stainless steel system designed specifically for the 2007-2011 BMW 335i (N54 3.0T twin-turbo) and 2008-2013 BMW 135i (N54 3.0T twin-turbo). Constructed from 304 stainless steel with 3-inch diameter mandrel-bent piping throughout, this exhaust system significantly improves exhaust flow compared to the factory setup. The design focuses on reducing backpressure, which directly benefits the efficiency of the N54's twin-turbochargers. By minimizing resistance in the exhaust stream, the turbos can spool more effectively, contributing to improved boost response and overall engine performance, especially when paired with Cobb Accessport calibrations. This cat-back system aims to deliver the distinct inline-six exhaust note characteristic of the N54 engine, enhancing its sound profile without introducing unwanted drone during cruising. Included with the exhaust system are all necessary hangers, gaskets, clamps, and hardware for a complete installation. The system features a straight exit with two 3.5-inch round stainless steel tips designed to align with the BMW rear fascia opening. Please note that delivery requires a signature upon arrival via UPS or FedEx.