Shimano
1137

Shimano RD-M640 Zee Rear Derailleur 10 Speed Freeride

The 10-speed Zee RD-M640 features Shadow Plus technology that significantly reduces chain noise and offers a more stable drivetrain. There are two Zee rear derailleurs available: the DH spec which handles a max rear sprocket of 28t, or this Freeride spec which handles a rear sprocket up to 36t.

Shipping Weight: 428g.
  • Shadow RD+
  • Short cage
  • 10-speed only
  • Shadow RD technology: Super low-profile design with built in chain stabilizer
  • Freeride Spec - 36T capacity