Engines - Exhaust
The response behaviour is improved thanks to the sports rear silencers. Made completely of stainless steel with chromed Racing tailpipes, they also provide a more sonorous note than the standard system. For the M-versions of the Z4 that are fitted with a twin sports silencer as standard, as well as the Twin Racing system there is a further option of Sports Trim design. This design is reserved exclusively for M-vehicles.