High power 4 piston Deore M6120 brake calliper providing efficient braking with a minimalist design Can be fitted front or rear Post mount (adapters not included) For use with Mineral oil which is non-corrosive and less hazardous than conventional hydraulic fluid The one way internal fluid circuit makes bleeding easy, while great piston retraction increases pad to rotor clearance Shim-less mounting bracket allows for quick installation and set up To be used in conjunction with Shimano hydraulic brake levers Can be used with Ice Tech pads available in resin or sintered compound, the optional aluminum radiation fin pad further improves heat dissipation reducing brake surface temperature by 50 deg C Comes as standard with D03S resin pads Hose not included