The 2012 shimano xtr race m985 post mount disc brakes have been fully bled are light on weight and heavy on performance with perfect modulation feather light action and a snappy lever return both the front and rear disc brake come without adapters or rotors giving you the freedom to customise and suit your bike recommended for use with ice tech centre lock rotors for optimum braking performance in a choice of 160 180 and 203 mm the shimano xtr race m985 disc brake benefits from a high powe