Shimano Deore RD-M5120 Rear Derailleur - 10-11 Speed MFPN=D165-X5034 Its short-nosed Boost design improves

Its short-nosed Boost design improves pedaling ergonomics rider maneuverability comfort and performance

Meets or exceeds ENBMX Category 2 standards

Bash rings that are mounted on the crankset are better supported than bash rings that are mounted to the frame or bottom bracket

Speed and efficiency inspired by MotoGP technology

30/35/40mm 4

Shimano Deore RD-M5120 Rear Derailleur - 10-11 Speed MFPN=D165-X5034 Its short-nosed Boost design improvesUtilizing the SHIMANO SHADOW RD+ design the SHIMANO DEORE M5120 rear derailleur delivers consistent MTB shifting performance over rough terrain. positions. Low profile design avoids damage from rocks Chain stabilizing technology reduces chain drop and makes for a quiet drivetrain in all gears Color Black Drivetrain Speeds 11