Est. 1982

Shimano Deore XT RD-M8120 12-Speed Rear Derailleur (10-45t Only)

The Shimano Deore XT RD-M8100 rear derailleur provides fast and precise shifting operations over a wide gear range. Guide and tension pulleys with 13 teeth and a rubber damper reduce noise and increase ride comfort. They also improve the chain's grip under all conditions.

  • Faster and shockless shifting
  • Low-profile design
  • Rhythm 12-speed drivetrain with sprocket combination 10-45T
  • Decreased rear derailleur and chain tension in low gear
  • New bumper added to rear derailleur pulley cage
  • Bigger 13T pulley
  • Fast and precise shifting performance optimized to take on any trail
  • Silent drivetrain in all gear positions
  • Stable drivetrain on rough terrain