Shimano Deore 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