Shimano SLX 4-Piston Brakes Offer a Familiar Feel and Similar Power at a Better Price [Review] - Singletracks Mountain Bike News
Shimano XTR BL-M9120 + BR-M9120 Enduro / Trail Hydraulic Disc Brake - I-Spec EV - J-Kit - Set RW
Shimano XTR BL-M9120 + BR-M9120 Enduro / Trail Hydraulic Disc Brake - I-Spec EV - J-Kit - Set FW
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