Slip-Ons represent the first step in the exhaust system tuning process, and they offer a great balance between price and performance. Sporty and lightweight Slip-On Line exhaust systems are a perfect match for this great Aprilia. Installation is a snap. The visual change comes with stylishly shaped carbon fibre muffler and end cap. In addition to design effects and improved power delivery, Slip-Ons also enhance the Aprilia sound. Let your bike stand out with more power, beautiful design, and the unique Akrapovic? sound of Slip-Ons.Passenger footrest for mounting needed. If you want mount the Slip-On without passenger foot rest please order optional carbon bracket.For perfect performance, throttle response and durability special developed mapping from Dynojet is recommended. Please visit http://www.powercommander.com/powercommander.Notice: when installing the slip-on system on 2019 model year, check engine light may appear.THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.