Product Description
The Shimano Deore XT M8100 hydraulic disc brake delivers powerful, controlled braking for XC, trail, and general mountain bike use.

This multi-variation listing lets you choose either the front 850mm or rear 1700mm brake assembly. Both versions pair the BL-M8100 brake lever with the BR-M8100 2-piston post-mount caliper, metallic finned pads, and a factory pre-bled Shimano mineral-oil hose.

Shimano’s Servo Wave Action provides quick pad engagement and a responsive lever feel, while adjustable reach allows the rider to fine-tune lever position. The I-SPEC EV-compatible lever design also supports clean integration with compatible Shimano controls.

Variation Options

Front

• Left brake lever
• 850mm hydraulic hose
• MPN: IM8100JLFPNA100

Rear

• Right brake lever
• 1700mm hydraulic hose
• MPN: IM8100JRRXNA170

Key Features

• Shimano Deore XT M8100 hydraulic brake system
• BL-M8100 lever with BR-M8100 2-piston caliper
• Servo Wave Action for quick brake engagement
• Adjustable lever reach
• Stiffened lever-body design
• I-SPEC EV compatible
• Metallic finned brake pads
• Pre-bled with Shimano mineral oil
• Post-mount caliper
• Available in front or rear configuration

Specifications

• Brand: Shimano
• Series: Deore XT M8100
• Lever Model: BL-M8100
• Caliper Model: BR-M8100
• Brake Type: Hydraulic Disc
• Caliper Pistons: 2
• Caliper Mount: Post Mount
• Hydraulic Fluid: Shimano Mineral Oil
• Pad Compound: Metallic
• Pad Type: Finned
• Reach Adjustment: Yes
• Contact Point Adjustment: No
• Shifter Integration: I-SPEC EV
• Color: Black

Front Variation Specifications

• Position: Front
• Lever Side: Left
• Hose Length: 850mm
• MPN: IM8100JLFPNA100

Rear Variation Specifications

• Position: Rear
• Lever Side: Right
• Hose Length: 1700mm
• MPN: IM8100JRRXNA170

Compatibility
Designed for compatible mountain bikes using a post-mount disc brake setup and Shimano mineral-oil hydraulic system.

The BL-M8100 lever supports Shimano I-SPEC EV integration with compatible Shimano shifters and controls.

Please select the correct front or rear variation and confirm hose length, brake mount, rotor size, and any required caliper adapter before ordering.

Included

• One Shimano BL-M8100 brake lever
• One Shimano BR-M8100 2-piston caliper
• Hydraulic hose in the selected length
• Metallic finned brake pads
• Factory mineral-oil fill

Not Included

• Brake rotor
• Rotor bolts
• Frame or fork-specific brake adapter unless pictured or stated

Condition

• New
• Non-retail packaged