The Shimano Deore XT RD-M8100 rear derailleur offers fast and precise shifting performance optimized to take on any trail.

• Offers fast and shockless shifting thanks to HYPERGLIDE technology
• 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
• Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear
• Long cage is designed to be used with 1x12 drivetrain systems
• Color: Black
• Largest Cog: 51
• Rear Derailleur Mount Type: 10x1 Standard
• Chain Wrap Capacity (teeth): 41
• Cage Length: Long
• Rear Der/Shifter Compatibility: Shimano Mountain
• Drivetrain Speeds: 12
• Weight: 284 g