Shimano XTR cutting edge braking technology lightweight & powerful easily adaptable post-style hydraulic disc brake calliper Oversized 22mm ceramic pistons optimized for heat insulation lightweight & stiffness Opposed 2-piston design reduces leading effect & optimal pad wear increases braking control Super lightweight mono body uses a forged one piece design that increases rigidity & reduces weight Can be used with a choice of adapters & rotors giving you the freedom to customise & suit your bike Recommended for use with Ice-Tech Centre-Lock rotors for optimum braking performance in a choice of 160 mm 180 mm & 203 mm 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 Easy to use one way oil bleeding for enhanced oil routing Mineral oil brake fluid Shim-less mounting system Banjo style attachment for neat hose alignment Contains standard G01A resin pads plus optional bleed nipple blanking grub screw to save a further 3 grams Average weight per calliper 95 grams including standard G01A resin pads