TheShimano XTR M9020 Post Type Hydraulic Disc Brake Caliperdelivers cutting edge braking technology, lightweight and powerful easily adaptable post-style hydraulic disc brake caliper. Shimano XTR M9020 Post Type Hydraulic Disc Brake Caliper Features Oversized 22mm ceramic pistons optimized for heat insulation, lightweight and stiffness Opposed 2-piston design reduces leading effect and optimal pad wear increases braking control Super lightweight mono body uses a forged one piece design that increases rigidity and reduces weight Can be used with a choice of adapters and 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 mm, 180 mm and 203 mm Can be used with Ice Tech pads available in resin or sintered compound, the optional aluminium radiation fin pad further improves heat dissipation reducing brake surface temperature by 50 deg C Easy to use one way oil bleeding for improved oil routing Mineral oil brake fluid Shim-less mounting system Banjo style attachment for neat hose alignment Contains standard J04C metal pads, plus optional bleed nipple blanking grub screw to save a further 3 grams For Front/Rear use.