Shimano

Deore Bl-M4100/Br-Mt420 Disc Brake+Lever Hydraulic Resin Pad

What Our Gearhead® Experts Are Saying:

"The BL-M4100/BR-MT420 combo is a standout for riders who demand four-piston power and precise modulation. The lever’s shorter free stroke and ergonomic shape make it easy to control, while the caliper’s consistent performance inspires confidence on steep, challenging trails. It’s a solid choice for aggressive riding at a great value."

Shimano’s Deore BL-M4100/BR-MT420 Disc Brake system is engineered for riders who push their limits on technical trails and demanding descents. The BL-M4100 lever features a two-finger design with a shorter free stroke, providing immediate engagement and a responsive feel. Its I-Spec EV compatibility allows for seamless integration with Shimano shifters, creating a streamlined cockpit that’s easy to customize. The BR-MT420 caliper utilizes a four-piston layout, delivering increased braking power and improved heat management compared to two-piston systems. This setup ensures reliable, fade-resistant performance on long descents and in variable conditions. The system uses mineral oil for smooth operation and straightforward maintenance, while the One-Way Bleeding design makes servicing hassle-free. With tool-based reach adjustment and compatibility with a wide range of rotor sizes, the Deore BL-M4100/BR-MT420 is a versatile choice for modern mountain bikes, offering the control and confidence needed for aggressive riding