Shimano XTR BL-M9100/BR-M9100 Disc Brake and Lever - Rear Hydraulic Post Mount Gray. Shimanos XTR XC hydraulic disc brake system increases brake rigidity for greater bike control and optimizes braking performance for different riding styles.

2-piston XC brake system offers high performance brake control with reduced input force at the finger tips

1-piece Aluminum caliper

Lever provides greater flexibility and an action-optimized cockpit layout

Magnesium master cylinder

Lever can be adjusted to suit any hand or riding style with tooled reach adjust

Not compatible with finned brake pads

Brakes are pre-bled