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Shimano M8120 SGS XT 12 Speed Long Cage 2x Rear Derailleur

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SKU 210000007808

The Shimano Deore XT RD-M8100/M8120 rear derailleur is designed to provide smooth and stable shifting for 12-speed MTB drivetrains.


  • Long cage is designed to be used with 2x12 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


  • 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