Est. 1982

Shimano Deore RD-M5120-SGS 10/11-Speed Rear Derailleur


The Shimano Deore RD-M5120 rear derailleur can be combined with 2x10-speed and 2x11-speed drivetrains as well as 1x10-speed drivetrains. 

It is designed for 42 tooth on the largest cassette sprocket when using a drivetrain with two chainrings, and can handle up to 46 teeth on the largest sprocket when using a 1x set-up.


  • 1x10, 2x10 and 2x11 compatible
  • 11t pulley wheels
  • Mount Type: Direct attachment (Conventional)
  • Max sprocket: 42t (2x10, 2x11), 46T (1x10)