NEW Shimano XT RD-M8100-GS Rear Derailleur - 12-Speed Medium Cage Black groupset-shifter-type-drop-bar less crisp shifting than cogs

less crisp shifting than cogs designed for multi-gear systems

120 mm or RST Aerial 110-15

Single sided locking ring

Fits XTR BR-M9000

NEW Shimano XT RD-M8100-GS Rear Derailleur - 12-Speed Medium Cage Black groupset-shifter-type-drop-bar less crisp shifting than cogsDeore 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 Rear Derailleur Mount Type: Shimano Rear Direct Mount Rear