Akrapovič P-HF977 Sound Kit for BMW F87 2 Series M2 F60 This exhaust system is not

This exhaust system is not EC/ECE type approved

Made specifically for the GT3 RS (991

The Evolution lowers the back pressure and gives the M5 more power without removing the catalytic converters

IAT Testing

The dual-mode ECU-controlled valve exhaust from Akrapovič offers a smooth

Akrapovič P-HF977 Sound Kit for BMW F87 2 Series M2 F60 This exhaust system is notThe sound of the superb Evolution Line (Titanium) exhaust system can be further controlled by adding the optional Akrapovi 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.