Rizoma 3D Brake Lever Black for Aprilia RS 660 20-22/RSV4 RF/RSV4 RR/Tuono 660 21-22Aerodynamics and grip. The 3D levers were developed through in depth wind tunnel testing and analysis. When used at high speeds (e. g. on racetracks), the resulting air pressure can have a significant impact on the braking circuit. To reduce this effect the outer tip of the lever has been hollowed to minimize this pressure and optimize performance. Made of anodized billet aluminum, these levers provide plenty of scope for adjustment as they move on