The Shimano XTR BR-M9020 disc brake caliper is a high rigidity aluminum caliper designed for enduro and trail riding.Finned metal pads Only compatible with 140mm disc rotors when used for rear2-piston caliper offers improved modulation and responseAdvanced heat control allows for stable performance in extreme conditionsShimano One Way Bleeding technology allows for simple maintenanceItem SpecificationsDefined ColorBlackBrake Caliper TypePost MountBrake Lever ActuationHydraulicRotor IncludedNoHydraulic Fluid TypeMineral OilPad CompoundMetallic