Details The Shimano Deore XT RD-M8100/M8120 rear derailleur is designed to provide smooth and stable shifting for 12-speed MTB drivetrains. Features: Long cage is designed to be used with 2×12 drivetrain systems Offers fast and shockless shifting 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 Specifications: Cage Length-Long Chain Wrap Capacity (teeth)-45 Color-Black Drivetrain Speeds-12 Largest Cog- 45 Rear Der/Shifter Compatibility- Shimano MountainRear Derailleur Mount Type-Shimano Rear Direct Mount Weight- 284
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