Akrapovič Slip-On Line Exhaust System 2019–2020 BMW X3 M/X4 M (F97/F98)Manufactured from high grade titanium, with parts cast in Akrapovis in house foundry, this exhaust system utilizes lightweight materials to reduce the 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 fiber round tailpipes give a distinctive look to the rear of the