REAR DERAILLEUR, RD-M8100, XT, GS 12-SPEED, TOP NORMAL, SHADOW PLUS DESIGN, DIRECT ATTACHMENT, 1x12

Description

* Hyperglide+ offers fast and shockless shifting* Silent and stable operation in all gears* Low-profile design* Extra wide range 12-speed drivetrain* Decreased rear derailleur and chain tension in low gear* New bumper added to rear derailleur pulley cage* Bigger 13T pulleys with sealed bearings for increased drivtrain efficiency