The Shimano Deore XT RD-M8100/M8120 rear derailleur is designed to provide smooth and stable shifting for 12-speed MTB drivetrains.

• Offers fast and shockless shifting
• The low-profile design includes a bumper added to the derailleur pulley cage
• Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain
• Includes large 13t pulley
• Color: Black
• Cage Length: Long
• Drivetrain Speeds: 12
• Largest Cog: 51
• Chain Wrap Capacity (teeth): 41 teeth
• Rear Derailleur Mount Type: Shimano Rear Direct Mount
• Rear Der/Shifter Compatibility: Shimano Mountain
• Rear Derailleur Mount Type: 10×1 Standard
• Weight: 284 g