Dual piston actuated mechanical disc brake for road and CX Carbon actuation arm for maximum rigidity, and weight savings Works with ALL cable actuated road levers. Compressionless (linear strand) housing is highly recommended TRP ultra-grippy semi-metallic pads - compatible with Shimano M525/M515 pads Rotors and adapters sold separately Weight: 146g per caliper Frt or Rr No Rotor Silver/Black Mechanical Standard Post MountUPC/EAN/GTIN: 4717592023022