Akrapovic Exhaust System for BMW Z4/M40i (G29)S BM T 9H SO Slip On Manufactured to exacting specifications from high grade titanium with parts cast in Akrapovics in house foundry this system utilises lightweight materials to reduce overall vehicle weight and optimize power and torque through the entire rev range. Meeting ECE type approval, the design of the system fully adapts to the lines of the car, and the single muffler layout with four superb hand crafted carbon fibre round tailpipes give a