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 CEasy 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