Aprilia RS660 2021 – Bonamici Adjustable Road or Race Shift Pattern RearsetsFootrests made entirely of billet by numerical control machines (CNC) with 3D technology. The use of return springs integrated in the levers and of ball bearings instead of bronze bushes, complete the work by manufacturing an excellent product that satisfies even the most demanding pilots. These rear sets can work with normal or reverse gearshift. Technical features: Possibility of adjustment in various positions Integrated brake lever return spring