BMW M2 (F87) Akrapovic Sound Kit

The sound of the superb Evolution Line (Titanium) exhaust system can be further controlled by adding the optional Akrapovič Sound Kit. This easy-to-install option makes possible louder or quieter settings of the Evolution Line. It has a special program for valve management (in quiet and loud mode) that is different from the stock version and controls the valves according to rpm, gear, and car mode.Pictures are symbolic.