Shimano Deore RD-M5120-SGS - ERDM5120SGS - 10/11-speed Shadow RD+ rear derailleur, SGS cage, Direct Mount compatible

Shimano Deore RD-M5120-SGS 10/11-speed Shadow RD+ rear derailleur

The Shimano Deore RD-M5120-SGS rear derailleur is designed for Shimano 10 and 11-speed drivetrains. With its SGS cage, Direct Mount compatible design, and SHIMANO SHADOW RD+ construction, it offers stable, quiet, and efficient shifting on rough terrain.

Thanks to its compact profile and chain stabilizer, the Shimano Deore RD-M5120-SGS - ERDM5120SGS rear derailleur limits the risk of damage from stones and roots, while reducing chain skips, clattering and transmission noise.

Compatible with 1x10, 1x11, 2x10, and 2x11-speed drivetrains depending on the configuration, this model accepts a large cog up to 46 teeth with a single chainring and up to 42 teeth with a double chainring. It is designed for mountain bikers seeking reliability, stability, and precision on demanding trails.

Design

Shadow RD+ Direct Mount

The Shimano Deore RD-M5120-SGS derailleur uses a direct mount with SHIMANO SHADOW RD+ design. This design offers a compact profile and improved chain stability on uneven terrain.

Compatible Direct Mount

This model is Direct Mount compatible, allowing for integration adapted to frames designed for this mounting standard.

SGS screed

The SGS cage allows for the management of a large chain length and an extended gear range, both in single chainring and compatible double chainring transmissions.

Compact profile

The compact profile design limits the derailleur's exposure to impacts, particularly against rocks, roots, and obstacles encountered on trails.

Chain stabilizer

The Shimano chain stabilizer reduces chain skipping, clacking and noise, in order to improve drivetrain stability in mountain biking.

Performance

Stable transmission on the track

The Shimano Deore RD-M5120-SGS is designed to maintain stable transmission on rough terrain, with less unwanted chain movement.

Efficient gear changes

The SHIMANO SHADOW RD+ design allows for good gear shifting performance in mountain biking, even when the terrain becomes more demanding.

Silent transmission

Reducing the tension on the rear derailleur and chain on the larger sprockets contributes to quieter operation in all gears.

Protection against obstacles

The derailleur's compact profile helps limit damage from rocks and roots, for better durability in mountain biking use.

Extended large sprocket compatibility

The derailleur accepts a large sprocket up to 46 teeth in 1x10 or 1x11 speed setups, and up to 42 teeth in 2x10 or 2x11 speed setups.

Compatibility

10/11 speed transmission

The Shimano Deore RD-M5120-SGS derailleur is compatible with Shimano 10 and 11 speed transmissions depending on the configuration used.

Single or double deck mounting

This model can be used in 1x10, 1x11, 2x10 or 2x11 speed transmissions, with different maximum sprocket sizes depending on the assembly.

Compatible chains

The derailleur is compatible with Shimano HG-X11 11-speed and HG-X 10-speed chains.

Compatible sprockets

The compatible top sprocket has 11 teeth. The maximum large sprocket is 46 teeth in a single chainring setup and 42 teeth in a double chainring setup.

Direct mounting

This model is compatible with Direct Mount setups, in accordance with the Shimano specifications indicated.

Technical specifications

• Brand: Shimano
• Product line: Deore
• Model: RD-M5120-SGS
• Shimano part number: ERDM5120SGS
• EAN code: 4550170618544
• UPC Code: 192790618548
• Product family: rear derailleur
• Reverse speeds: 11 / 10 speeds
• Type: Shadow RD+ direct mount
• Direct mounting compatibility: yes
• Screed: SGS
• Color: color series
• Packaging: individual packaging
• Compatible chain: HG-X11 11-speed / HG-X 10-speed
• Roller: 11 teeth
• Cable adjuster: no
• Minimum upper sprocket: 11 teeth
• Maximum upper sprocket: 11 teeth
• Large sprocket min.: 42 teeth
• Maximum sprocket: 46 teeth in 1x11 / 1x10 speed
• Maximum sprocket: 42 teeth in 2x11 / 2x10 speeds
• Maximum front difference: 10 teeth
• Design: SHIMANO SHADOW RD+
• Chain stabilizer: yes

Recommended use

• Replacing a Shimano Deore 10 or 11-speed rear derailleur
• Shimano Deore compatible drivetrain
• 1x10 speed assembly
• 1x11 speed assembly
• 2x10 speed assembly
• 2x11 speed assembly
• Mountain biking
• Trail
• Sporty hybrid bike or compatible trekking bike
• Rough terrain with rocks, roots and technical sections
• Assembly with Shimano HG-X11 or HG-X compatible chain

Why choose the Shimano Deore RD-M5120-SGS rear derailleur?

• Shimano Deore rear derailleur compatible with 10 and 11 speeds
• SHIMANO SHADOW RD+ compact profile design
• Chain stabilizer to reduce skipping, clattering and noise
• Stable transmission over rough terrain
• SGS screed for a wide range of applications
• Compatible Direct Mount
• Compatible with HG-X11 11-speed and HG-X 10-speed chains
• Large sprocket compatible up to 46 teeth in a single chainring setup
• Large sprocket compatible up to 42 teeth in a double chainring
• Silent operation in all gears engaged
• Compact profile limiting the risk of damage on trails
• Genuine Shimano product
• Reference ERDM5120SGS