Shimano XT RD-M8100-GS Rear Derailleurs

Deore XT RD-M8100 Rear Derailleur

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