Shimano Deore RD-M5120 Rear Derailleur 10/11 Spd. SGS

The Shimano Deore RD-M5120-SGS rear derailleur delivers consistent shifting on rough terrain for 10- and 11-speed MTB drivetrains. Its low-profile SHADOW RD+ design helps protect it from trail impacts, while the chain stabilizer reduces chain drop, slap and noise. It supports up to a 46-tooth cassette in a 1×10 setup or 42 teeth in 2×10/2×11 configurations.