Shimano XTR BL-M9120 / BR-M9120 Hydraulic Disc Brake — Rear, 4-Piston, 1700mm Pr
Shimano XTR BL-M9120/BR-M9120 is a pre-bled 4-piston hydraulic disc brake set for aggressive trail and enduro riding, delivering maximum stopping power and control.
Race-proven 4-piston XTR power — genuine Shimano, brand new.
Will it fit? This is the rear brake with a 1700 mm hose, supplied as a pre-filled J-kit (lever + caliper + hose, ready to fit). 4-piston caliper, post-mount. For Shimano hydraulic mountain disc systems — pair with a Center Lock or 6-bolt rotor (sold separately).
Key Specifications
Brand | Shimano |
Series | Shimano XTR |
Model | BL-M9120 / BR-M9120 |
MPN | IM9120JRRXSA170 |
UPC | 192790443072 |
Type | Hydraulic Disc Brake |
Pistons | 4-piston |
Position | Rear |
Hose Length | 1700 mm |
Mount | Post Mount |
Brake Pads | N03A resin, finned (pre-installed); caliper also accepts Shimano N04A metal pads (sold separately) |
Material | Aluminum / composite |
Weight | 315 g (11.1 oz) |
Color | Black |
Country of Origin | Japan |
Condition | Brand new — original Shimano retail packaging |
Technology Highlights
✓4-piston caliper — maximum braking power and heat management for steep, sustained descents.
✓SERVO WAVE lever — quick pad contact and a wide, controllable power band.
✓Pre-bled J-kit — factory-filled with mineral oil for fast, clean installation.
✓ICE TECHNOLOGIES cooling — resists brake fade on long descents.
What's in the Box
1 × Shimano XTR BL-M9120 brake lever
1 × BR-M9120 4-piston caliper with N03A resin pads (finned) pre-installed
Pre-connected 1700 mm hydraulic hose (pre-bled)
Mounting hardware & Shimano documentation
Brand new in retail packaging. Ships from Ontario, California (US domestic) · Estimated delivery 3–5 business days · Free 30-day returns.
