Shimano BL-4100/MR-MT420 Rear

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