Shimano XT M8120 hydro disc brake (pair) pre-bled metal pad w/ fin **F – recycledmoutainracing.com
Amazon.com: SHIMANO Deore XT BL-M8100/BR-M8120 Disc Brake and Lever - Rear, Hydraulic, Post Mount, 4-Piston, Finned Metal Pads, Black : Sports & Outdoors