Akrapovič audio kit for BMW F87 M2 N55 engine

Description

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 allows you to adjust the sound volume of the Evolution Line louder or quieter. It has a special valve management program (quiet and loud mode) that is different from the stock version and controls the valves depending on the engine speed, gear and riding mode.