The Shimano Deore XT BL-M8100/BR-M8100 rear disc brake set delivers lightweight, cross-country-tuned stopping power in a pre-bled, ready-to-install package. Combining the BL-M8100 left lever with the BR-M8100 2-piston caliper and a 1700mm hydraulic hose, it's engineered for XC and trail riders who demand precise modulation and consistent performance across all conditions.

Highlights

• SERVOWAVE technology: Initial lever travel quickly closes the pad-to-rotor gap, then power multiplication increases rapidly for strong, intuitive braking with minimal effort.
• 2-piston caliper: The BR-M8100 post-mount caliper delivers lightweight, consistent stopping power optimised for cross-country and trail riding.
• ICE Technologies pads: Finned metallic pads dissipate heat efficiently, reducing fade and extending pad life even on long descents.
• Reach adjust: Tool-free reach adjustment on the BL-M8100 lever suits any hand size and riding style — dial it in without stopping.
• I-SPEC EV clamp band: Integrates cleanly with Shimano I-SPEC EV compatible shifters to reduce cockpit clutter.
• One-Way Bleeding system: Shimano's closed bleed port and funnel tool make maintenance quick and clean — no mess, no air contamination.
• Pre-bled and ready: Comes pre-bled with Shimano mineral oil so installation is straightforward — no bleeding required out of the box.

Lever Detail

The BL-M8100 aluminium lever body is 10% stiffer than its M8000 predecessor, improving power transfer and reducing unwanted flex under hard braking. The I-SPEC EV clamp band allows clean integration with compatible Shimano shifters, keeping the handlebar tidy. Free stroke can also be adjusted to fine-tune the feel to your preference.

Caliper Detail

The BR-M8100 2-piston caliper uses a post-mount interface and is supplied with finned metallic pads. Shimano's inside hose routing via a banjo-bolt connection keeps the brake line tidy and protected. Mineral oil hydraulic fluid provides a consistent, fade-resistant feel with low maintenance requirements.

Compatibility & Fit

This is a rear brake set. The lever is left-hand (for rear brake — Australian setup). Caliper mounting: post mount (flat-mount adapter required for flat-mount frames, sold separately). Compatible with standard Shimano mineral oil. Rotor not included — compatible with Shimano Centre Lock and 6-bolt rotors via appropriate adapters. Hose length: 1700mm. Compatible with Shimano I-SPEC EV components.