The Slip-On represents the first step in exhaust system tuning. It is simple to install and replaces a stock muffler. It also offers the best combination of price and performance.With the Akrapovi? Slip-On system you will get more power, more torque, and less weight. The Akrapovi? Slip-On system gives your scooter that unmistakable deep resonant Akrapovi? sound and also dramatically changes its visual appearance. Each product features Akrapovi?’s finest carbon fibre end caps.