Shimano, XTR RD-M9100, Rear Derailleur, Speed: 11/12, Cage: SGS, Grey

Description

* Hyperglide+ offers fast and shockless shifting* Silent and stable operation in all gears* Low-profile design* Two cage lengths available: SGS, compatible with 12 speed 10-51T cassettes, and GS, compatible with 11 or 12 speed 10-45T cassettes* 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* Weight: 240g (SGS)