ShimanoDeore BL-M4100/BR-MT420

BL-M4100
– Intuitive and powerful braking
– Quicker brake engagement with shorter free stroke
– Rider tunable and action-optimized cockpit
– High-performance brake control
– Additional contact point for a stiffer brake lever
– 10 deg. rotation angle setting range for I-SPEC EV shifting lever

BR-MT420
– 90% braking power vs. BR-MT520
– 20% increase braking power vs. current 2-piston BR-MT400
– 150% better wear-resistance vs. current 2-piston BR-MT400
– Brake pad: resin, metal
– Pre-assembled and bled brake lever and caliper, with SM-BH59-SS hose & mineral oil
– Without rotor and adapter
– One-way bleeding system