The BMW 335I twin turbo vehicle is the hottest new tuner car to hit the market. With any vehicle at this caliber, performance modifications come naturally. With the need to increase performance, Agency Power has engineered, tested, and released the first exhaust system for the 335I. Gaining horsepower and torque, this elegantly finished exhaust has a racing sound that any BMW driver desires. The exhaust is made out of 321 stainless steel. Features twin 2.5 inch piping from the factory catalytic converters back. Dual 3.5 inch polished tips fit stealthy in the stock location. To gain the best sound and performance, Agency Power uses a single canister muffler design that chambers the exhaust flow. Dyno tested and daily driven, this made in the USA exhaust system is the first step in your BMW 335I power modifications. This exhaust fits the 2007+ Please see our attached dyno sheet and sound clip to get your engine going!