The GRX BR-RX820 2-piston disc brake caliper brings a high level of control to gravel cycling with enhanced modulation and a quick initial braking point. Despite its smaller construction, the system is exceptionally quiet and easy to maintain.Features-2-piston caliper features 10% wider pad clearance to decrease brake noise-One-way maintenance-friendly bleeding process for quick and easy prevention of air bubbles in the hydraulic system-Includes finned L05A pads with a resin compound for enhanced heat dissipation-Includes bracket fo 140/160 rotors (assembled for 160mm)-Disc brake rotor sold separatelyItem Specifications-Brake Lever Actuation:Hydraulic-Rotor Included:No-Brake Caliper Type:Flat Mount-Hydraulic Fluid Type:Mineral Oil-Pad Compound:Resin