XT RD-M8100-SGS Rear Derailleur 12-Speed Long Cage

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