Join Date: Jun 2003
Location: Central Colorado, , USA
Running the BMW version with the DB killers taken out. Still is not loud. Perfect IMO, and much finer than stock. I consider appearance, sound, and performance when giving an exhaust consideration. Personally give this exhaust top shelf honors for appearance and sound. The performance gain is very marginal. This is OK. BMW sporting boxers are already very efficient and optimized in stock form. Would get the exhaust again but do believe it is overpriced -- Akrapovics tend to be very pricey regardless of bike, and especially so with this S.