- 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 (2x11/2x10-speed)
- 41T capacity SGS cage