The Final Slip-On represents the first step in tuning your exhaust system.It is simple to install and replaces the factory one.It also offers the best combination of price and performance.With the Akrapovic system you get optimized power and torque and less weight (-33%). The Akrapovic system provides your scooter with the incomparable Akrapovic deep-tuned sound and also dramatically changes its visual appearance.Each product features Akrapovic's finest carbon fiber covers.The catalytic converter is included in the system.