The optional Akrapovic Sound Kit enables owners of selected Akrapovic car exhausts to control the sound of the system from the cockpit of their machine. Using Akrapovic technology, drivers can easily switch between the quiet mode and a sportier sound. With the use of a receiver (already included in evolution system) to drive the actuators that open or close the valves at the end of the exhaust system, drivers can use the Sound Remote Controller to regulate the valves.With the use of the optional Akrapovic Sound Kit, the ECE type approval is no longer valid.Pictures are symbolic.

This Part Fits:

Year	Make	Model	Submodel
2020	BMW	M340i	Base
2021	BMW	M440i	Base