Sporty cat-back exhaust system by Milltek Sport dedicated to BMW M3 F80, M4 F82/F83. The entire system is made of stainless steel and finished with 4 tips with a diameter of 90 mm. The exhaust is available in a louder Race version and a quieter Resonated version. The system is compatible with the stock downpipe. All versions have a rear silencer compatible with the throttle system controlled by the onboard computer.