The Shimano Deore M5120 rear derailleur brings reliable shifting to rough terrain with its Shadow RD+ design. A low-profile cage helps protect against rock strikes, while chain stabilizing technology minimizes drops and keeps the drivetrain running quiet and smooth across all of your 10 or 11 speeds.

Features

• Low-profile design avoids damage from rocks
• Chain stabilizer reduces chain drop, slap and noise
• Silent drivetrain in all gear positions
• Decreased rear derailleur and chain tension in low gear