The M6220 four-piston caliper delivers consistent, full-power braking through a rigid two-piece construction. Updated low-viscosity oil, a new piston seal, and heat-resistant resin pistons keep performance stable across a wide temperature range. Compatible with metal or resin pads (non-finned) and standard or 2.2mm thick rotors. Features Two-Piece Construction: Rigid, durable design Four-Piston: Dual-diameter 4-piston design, offering high power and control Temperature Stability: New low-viscosity oil, new piston seal and new heat-resistant resin piston result in stability over a wider range of temperatures Pad Compatibility: Works seamlessly with non-finned metal or resin pads Specs Model: Deore BR-M6220 Model ID: BR-M6220 Type: Hydraulic # of Pistons: 4 piston Brake Pads: D02S-MX Metal (installed) Hose: SM-BH90-SS (not included) Hose Joint: Straight Mineral Oil: Shimano Low Viscosity (not included)