Dual piston actuated mechanical disc brake - both pads actuate providing even and precise clamping force Works with all linear/long pull brake levers TRP`s own ultra-grippy semi-metallic pad that is Shimano M525/M515 compatible allowing for further customization Easy adjustment and set up Rotor and adapters sold separately Frt or Rr No Rotor Black Mechanical Standard Post MountUPC/EAN/GTIN: 4717592022179