The Shimano XTR BR-M9220 rear disc brake delivers the most powerful and predictable stopping control Shimano has ever engineered for trail and enduro riding. Paired with the BL-M9220 left lever and metal finned pads, this rear brake assembly offers four-piston bite with fine-tuned modulation — built for riders who demand confidence on sustained descents and technical terrain.

Highlights

• BR-M9220 four-piston caliper with dual-diameter piston design for a DH-capable power curve
• BL-M9220 left lever with redesigned SERVO WAVE track for smooth, progressive power ramp-up
• Includes metal sintered pads with cooling fins to dissipate heat on long descents
• ERGO FLOW lever geometry — closer pivot point and 5-degree upswept blade for natural finger arc
• Toolless reach adjust dial and free-stroke adjustment on the lever
• Low-viscosity Shimano mineral oil maintains consistent bite point across all temperatures and conditions
• One-piece caliper construction optimised for rigidity and lightweight performance
• Post mount caliper with anti-rattle finned pad design to eliminate vibration noise
• Pre-bled 1000mm hose included — ready to install
• I-SPEC EV compatible lever clamp for integrated shifter/brake mounting

Four-Piston Power, Trail-Tuned Modulation

The BR-M9220 uses a dual-diameter four-piston layout — a design borrowed from downhill racing but refined for trail and enduro use. The two inner pistons engage first for initial bite, then the larger outer pistons add progressive stopping force, giving riders the modulation to feather speed precisely on loose or technical sections. The one-piece caliper body maximises rigidity without adding unnecessary weight, and updated seals keep performance consistent across long descents.

SERVO WAVE Lever Technology

The BL-M9220 lever features Shimano's redesigned SERVO WAVE mechanism, which changes the mechanical advantage through the lever stroke to deliver fast initial pad take-up, then a smooth and powerful power ramp as you squeeze harder. The new low-viscosity mineral oil formulation ensures rebound speed and bite-point feel stays consistent whether you are riding in the cold highlands or a hot summer descent. The alloy lever blade is forged for durability and shaped with an upswept geometry to sit naturally at the fingertip.

Compatibility & Fit

The BR-M9220 caliper uses a standard post mount interface. Compatible rotors include the RT-CL900 (Centre Lock) and RT-MT905 (Centre Lock). The BL-M9220 is the left-hand lever, controlling the rear brake in Australian setup. I-SPEC EV clamp allows direct integration with compatible Shimano Di2 or mechanical shifters, eliminating a separate clamp band. Brake fluid: Shimano low-viscosity mineral oil only — do not use DOT fluid.