Powerful fully bled XT hydraulic Servo Wave disc brake comes fully bled and calliper comes without adapters or rotors giving you the freedom to customise to suite your bike. Short stroke Servo-Wave mechanism for quick pad engagement and more power for aggressive riding. Oversized 22mm twin phenolic pistons optimized for heat insulation, lightweight and stiffness. Using Ice Tech alloy fin pads further improving heat radiation performance. Recommended for use with Ice Tech rotors for optimum braking performance in a choice of 140, 160, 180 and 203 mm.