Aprilia Futura Slip-Ons

Staintune Part Number: A306C3

This Staintune exhaust features a removable sound restrictor. This restrictor allows you to adjust the sound levels to your liking. With the restrictor in place you will get an exhaust note that is just slightly louder than the stock muffler. It will be throatier under acceleration and deceleration and only the slightest bit louder under steady throttle setting like out on the highway. Think of it as a shotgun choke which reduces the diameter of the exhaust exit. It has only a very small effect on performance when installed. Its main funtion is to reduce the exhaust note to a very pleasing level.