Shimano Dura-Ace BR-R9270 Hydraulic Disc Brake Caliper - Rear, Flat Mount, Resin Brake PadsWith an all new mono body construction design, high performance braking has reached a new peak. The Dura Ace BR R9270 caliper drops weight while also providing increased pad clearance, ensuring a quieter ride. Lastly, a new bleeding process makes maintenance easier than ever. One piece structure maximizes stiffness and reduces weight 10% wider pad clearance decreases the chance of rotor rub Maintenance friendly bleeding process Product Specifics Brake