Radial Mount Calipers aren't just for sport bikes any more. Now available for 2000-Up Harley Davidsons our Radial Mount Caliper systems offer more braking power by achoring them next to the rotors entrance and exit points and holds a more precise caliper to rotor alignment. The 4 piston design offers improved pad contact for additional optiumum braking power. Precision CNC machined from billet aluminum and feature our iconic PM logo machined into the side. Fits 11.5", 11.8" or 13" rotors (except Springer models). Adapter brackets are available for left and right side for single and dual disc configurations.