Akrapovič Sound Kit for BMW F91 F92 F93 M8 / M8 Competition OPF/GPFP HF1263 The optional Akrapovi Sound Kit enables owners of selected Akrapovi car exhausts to control the sound of the system from the cockpit of their machine. Using Akrapovi 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

Each valve has a housing cast in Akrapovič’s in-house foundry

Enhanced turbo efficiency

Direct OEM fitment - fully bolt-on

4L twin-turbocharged V8

with a torque gain of 33

Durability: Built with high-grade 304 stainless steel and TIG-welded construction for long-term reliability

With a specially developed and tuned sound

Developed to deliver both power and torque gains throughout the range with most gain in lower rpm will improve responsiveness and drivability

allowing the engine to breathe more freely and improve horsepower and torque output

and configuration from the stock system means the exhaust saves weight and optimizes the engine’s power and torque levels

also constructed from same materials

ECU remapping is not needed