The Akrapovič Custom Bikes SoundKit App enables the rider to control the sound the Akrapovič exhaust system. Using innovative Akrapovič technology, the exhaust can easily be switched between the closed quiet mode, for urban and built-up area riding and an automatic mode with a deep resonant sound, designed to give a full aural experience on the open road. If the rider wants to hear how the machine roars whilst using the Optional Remote Controller, just switch to the open mode option and enjoy th