Shimano XT BL-M8000/BR-M8020 I-Spec II Disc Brake Lever/Caliper Set READ | eBay
Shimano XT M8100 four-piston brakes on test – Where there is lots of light, there are also shadows | ENDURO Mountainbike Magazine
Shimano Deore XT BR M785 Hydraulic Disc Brake System user reviews : 4.9 out of 5 - 67 reviews - mtbr.com
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