Aerodynamics and feel. The design of the RRC handles starts from a process of analysis and testing in the wind tunnel. It has been found that, in sporty use at high speeds, the force of the air pressure has a significant effect on the braking system. To reduce this effect, a drain has been carried out at the outer end of the lever that reduces the existing pressure to a minimum to guarantee optimal operation. In aluminum machined from a solid block and anodized, the RRC levers have the adjustment mechanism positioned at the top, thus allowing greater accessibility.