The optional Akrapoviè Sound Kit enables owners of selected Akrapoviè car exhausts to control the sound of the system from the cockpit of their machine. Using Akrapoviè 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 or the new smartphone app (for iOS and Android) to regulate the valves. With the use of optional Akrapoviè Sound Kit, the ECE homologation is not valid anymore.Pictures are symbolic.