Shimano Deore XT BL-M8100 / BR-M8120 Hydraulic Disc Brake — Front, 4-Piston, 1000mm Pre-Bled J-Kit, Mountain Bike

Shimano Deore XT BL-M8100/BR-M8120 is a pre-bled 4-piston hydraulic disc brake set that pairs the lightweight XT lever with a powerful 4-piston caliper for trail and enduro riding.

4-piston XT control — 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 BR-M8120 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 BR-M8120 caliper — extra power and heat control for demanding descents.
• ✓ SERVO WAVE lever — rapid pad contact and a wide modulation range.
• ✓ Pre-bled J-kit — factory-filled for fast, clean installation.
• ✓ ICE TECHNOLOGIES cooling — resists brake fade on long descents.

What's in the Box

• 1 × Shimano Deore XT BL-M8100 brake lever
• 1 × BR-M8120 4-piston caliper
• Pre-connected 1000 mm hydraulic hose (pre-bled)
• Mounting hardware & Shimano documentation