Amazon.com: SHIMANO Deore XT BL-M8100/BR-M8120 Disc Brake and Lever - Front, Hydraulic, Post Mount, 4-Piston, Finned Metal Pads, Black : Sports & Outdoors
Shimano's XT and SLX 12 Speed - Mountain Bike Drivetrains
Shimano XT, SLX and Deore Brakes Compared - M615 vs M675 vs M785 - YouTube
First test: Shimano XT M8100 and SLX M7100 disc brakes – lots of power at a fair price | ENDURO Mountainbike Magazine