Shimano Deore XT BL-M8100/BR-M8120 Disc Brake and Lever - Rear, Hydraulic, Post Mount, 4-Piston, Finned Metal Pads, Black

The Shimano XT BR-M8120 Disc Brake - Rear come with more stopping power than ever before. The Shimano XT BR-M8120 Disc Brake - Rear comes with 4 pistons per brake caliper so you can double down on the stopping power. The Shimano XT BR-M8120 Disc Brake - Rear brings XC weight to Enduro performance.