Shimano Deore RD-M5120 – Precise Derailleur for 10/11-Speed
The Shimano Deore RD-M5120 is a mechanical rear derailleur from the Deore series, designed for 10- and 11-speed drivetrains. The SGS Shadow+ technology ensures quiet and reliable operation even in demanding conditions.
Shadow+ damping prevents chain slap and ensures quiet riding off-road.
Compatible with 10- and 11-speed drivetrains for flexible gearing options.
Direct mount allows for simple and precise installation on the frame.
The compact SGS Shadow+ design reduces the risk of damage from obstacles.
24 months manufacturer's warranty provide peace of mind for long-term use.
What sets the Shimano Deore RD-M5120 apart
Compared to standard derailleurs, the Shadow+ technology offers significantly reduced chain movement, resulting in less noise and more control. The direct mount and Top-Normal cable routing ensure precise shifts under load.
Ideal for...
This derailleur is particularly suitable for mountain bikers and touring cyclists who value reliable shifting performance off-road. It is also an excellent choice for e-MTBs with 10/11-speed drivetrains.
How to use the Shimano Deore RD-M5120
Mount the derailleur directly to the frame's derailleur hanger. Connect the shift cable to the Top-Normal routing and adjust the derailleur tension with the adjustment screw. The Shadow+ damping can be activated via a lever if needed.
Shimano is a world-leading manufacturer of bicycle components and fishing tackle. The brand stands for innovation, quality, and reliability, particularly in the areas of derailleurs, brakes, and drivetrain components. Shimano products are valued by professionals and hobbyists alike.
It is a mechanical rear derailleur from Shimano's Deore series, designed for 10- and 11-speed drivetrains and equipped with Shadow+ damping technology.
The RD-M5120 is compatible with 10- and 11-speed drivetrains, both mechanical and some electronic systems (not factory tested, please verify manufacturer specifications). It fits Shimano Deore, SLX, XT and other 10/11 groupsets.
SGS stands for the long cage version, optimized for large cassettes. Shadow+ describes a damping mechanism that reduces chain movement, ensuring quiet riding and less chain slap.
The derailleur is supplied with mounting hardware and cable guide. The exact contents may vary depending on the packaging – please check the sales packaging.
Clean the derailleur regularly from dirt and lightly lubricate moving parts. Check cable tension and adjust if necessary. The Shadow+ damping requires no special maintenance.
Subscribe to the newsletter
New arrivals, promotions and exclusive offers — straight to your inbox.
Please complete your information below to login.
Sign In
Create New Account