Shimano Deore M4120 10/11-Speed Rear Derailleur

Deore M4120 Shadow 10/11-speed rear derailleur for the dependable shifting performance and durability
Shadow design features a super low profile design and optimized slant angle for super light shifting action
Single tension spring prevents contact with the chainstay resulting in a silent ride
Direct cable routing prevents snagging from any trail side hazards
Wide alloy links and pivot body
Fluorine-coated link pin bushings
Strong return spring for a positive shifting feel
Durable 11T bearing pulleys for low friction
Top normal spring uses the spring to select higher gears
HG-X11 11-speed and HG-X 10-speed compatible
Max low sprocket: 42T (2×11/2×10-speed)
41T capacity SGS cage