We are very to proud to loudly announce our newly developed Active Valve Sport Exhaust System for the BMW M4 (F82 F83).
Lighter, made from Type 304 austenitic Stainless Steel with QS Carbon Sleeved Tips for a unique look. This system integrates with our Active Valve Technology so at the press of a button regardless of what driving mode you are in, you can change from Race Car Loud with all the pops and burbles to a relatively civilised driving experience.