The Shimano Deore M5120 Rear Derailleur delivers dependable, precise shifting performance for mountain bikes running 10-speed or 11-speed drivetrains. Built with Shimano Shadow Plus technology, this MTB rear derailleur features a super low-profile design and optimised slant angle for smooth, light-action gear changes on technical trails.
The integrated Shadow Plus chain stabiliser significantly reduces chain bounce on rough terrain, ensuring a stable drivetrain, quieter ride, and improved chain retention. A single tension spring minimises chainstay contact, while direct cable routing prevents snagging on trail obstacles.
Constructed with wide alloy links, a robust pivot body, and fluorine-coated link pin bushings, the M5120 offers exceptional durability and low-friction performance. Durable 11T bearing pulleys enhance efficiency, and the strong return spring provides a crisp, positive shifting feel.
Compatible with both HG-X11 11-speed and HG-X 10-speed systems, this derailleur supports a max low sprocket of 46T for 1x10-speed setups and 42T for 2x11 or 2x10-speed drivetrains, with a 41T capacity SGS long cage ideal for wide-range gearing.
- 10/11-speed MTB rear derailleur for trail, enduro, and all-mountain riding
- Shadow Plus technology for low profile, stable, and quiet performance
- Chain stabiliser switch reduces chain slap and improves retention
- Single tension spring for silent operation
- Direct cable routing to prevent trail-side snags
- Wide alloy links & pivot body for increased strength and stiffness
- Fluorine-coated bushings for smooth operation
- 11T sealed bearing pulleys for low friction and durability
- HG-X11 & HG-X 10-speed compatible
- Max low sprocket: 46T (1x10-speed), 42T (2x11/2x10-speed)
- Total capacity: 41T (SGS long cage)
For mountain bikers who demand smooth, durable, and reliable shifting across varied terrain, the Shimano Deore M5120 SGS Shadow Plus Rear Derailleur is the ultimate performance upgrade.