The Shimano Deore XT M8120 caliper features consistent braking performance and reliable stopping power in all conditions. The 4-piston caliper instills greater downhill confidence and control. Details: Model No: BR-M8120 Series: Deore XT M8100 Pistons: 4 Mount: Post mount Included brake pads: N04C metal Fits front or rear brake Compatibility: The Shimano Deore XT BR-M8120 Disc Brake Caliper is compatible with the following: Brake lever: BL-M8100 Brake hose: SM-BH90-SBM Oil: Shimano Hydraulic Mineral Oil Brake pad: D02S metal, D03S resin, N03A resin, N04C metal