Akrapovic Sound Kit for 2021 BMW M4(P-HF1384) 1405 consider pairing with Active Autowerke's

consider pairing with Active Autowerke's equal length midpipe and valved axle back exhaust

combining weight savings

Matches the APR Intake System

BashGuard™ brings up the rear

2 Carrera on our in-house Dynojet to unlock extra power on both stock vehicles and optimize performance with Fabspeed exhaust components

Akrapovic Sound Kit for 2021 BMW M4(P-HF1384) 1405 consider pairing with Active Autowerke'sThe 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 to drive the actuators that open or close the valves at the end of the exhaust system, drivers can use the Sound Remote Controller or the new smartphone app (for iOS and