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.