The Shimano BR-MT620 hydraulic four-piston disc brake calipers bring consistent and full-power braking to the line. The calipers are built around a rigid two-piece design and offer better bike control through their new low-viscosity oil, new piston seal and new heat-resistant resin piston, allowing the braking system to stay stable over a wide range of temperatures.Two-piece construction provides a rigid, durable designDual-diameter 4-piston design, offering high power and controlNew piston seal, heat resistant resin pistons, and Shimano's low-viscosity oil ensure that braking remains stable over a wide range of temperatures Includes D03S-MX resin padsRecommended for use Deore BL-M6200 brake levers (sold separately)Compatible with both standard and 2.2mm thick disc brake rotorsItem SpecificationsBrake Caliper TypePost MountBrake PositionFront or RearColorBlackDefined ColorBlackHydraulic Fluid TypeMineral OilPad CompoundResinRotor IncludedNo Shimano Deore BR-MT620 Disc Brake Caliper Disc Brake Calipers UPC: 192790999845