Shimano XTR BL-M9120 / BR-M9120 Hydraulic Disc Brake — Front, 4-Piston, 1000mm Pre-Bled J-Kit, Mountain Bike

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 front brake with a 1000 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

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
• Pre-connected 1000 mm hydraulic hose (pre-bled)
• Mounting hardware & Shimano documentation