The Shimano BL-M4100 / BR-MT410 hydraulic disc brake represents MTB braking excellence in the DEORE M4100 range. Designed for trail, enduro and All-Mountain, this complete rear system combines the ergonomic two-finger BL-M4100 lever with the 2-piston BR-MT410 caliper, delivering powerful, progressive and reliable braking in all conditions. Supplied pre-bled with a 1700 mm hose and B03S resin pads, it guarantees quick installation and optimal control from the very first ride.

Technical Highlights

• Optimized brake engagement: The BL-M4100 lever offers a shortened free stroke and faster engagement for intuitive and responsive braking, allowing you to stay focused on riding.
• Superior modulation: The 2-piston BR-MT410 caliper ensures rapid piston retraction and fine modulation that perfectly doses braking power according to terrain.
• Adjustable I-SPEC EV cockpit: I-SPEC EV compatible with 10° angular adjustment, allowing integration of Shimano shifters for an optimized and ergonomic riding position.
• ONE WAY BLEEDING system: Unidirectional bleeding technology facilitating maintenance and effectively eliminating air bubbles from the hydraulic circuit for consistent braking.
• Controlled weight: Only 307 g (without disc or adapter) for a complete rear assembly, demonstrating a design combining lightness and robustness.
• Ready to install: Supplied pre-bled with SM-BH59-SS 1700 mm hose, B03S resin pads and all necessary fittings for immediate installation.

Hydraulic Architecture and Design

This rear kit uses Shimano mineral oil, which is more thermally stable and gentle on seals. The braking system features a Post Mount caliper mounting (adapter not included) and utilizes optional ICE TECHNOLOGIES to optimize heat dissipation during long descents. The BL-M4100 lever benefits from an additional contact point reinforcing rigidity and improving braking feel under heavy load.

Performance and Recommended Use

The BR-MT410 / BL-M4100 is intended for demanding MTB riders seeking a reliable and high-performance braking system, without compromising on quality. Ideal for:

• Demanding trail and All-Mountain
• Enduro and technical descents
• E-MTB requiring increased braking power
• MTB touring and bikepacking with loads

Compatibility and Installation

This rear (right) kit integrates perfectly into DEORE M4100, M5100 and M6100 groupsets. It accepts all Shimano 160/180/203 mm discs in Center Lock or 6-bolt mounting (depending on hub). The 1700 mm hose suits most modern MTB frames for rear mounting. The B03S resin pads offer an excellent power/silence compromise, suitable for versatile use.