1.800.651.4050 Mon-Sat 8am-5pm PT
Shimano Deore RD-M5100 11-Speed Rear Derailleur Shimano Deore RD-M5100 11-Speed Rear Derailleur
Click to zoom

Deore RD-M5100 11-Speed Rear Derailleur

Mfg PartNum:IRDM5100SGS
Earn $6.19 in Rewards credit. Click to learn more.
This color/size is not eligible for Rewards points
Out of Stock
This item is currently not in stock. Click Notify Me to receive an email when the item becomes available.
InstantPrice MatchWhat is this?
Qualifies for Free Shipping!

Optimal Shifting On Rough Terrain

Utilizing the Shimano Shadow RD+ design, the Shimano Deore M5100 rear derailleur delivers consistent MTB shifting performance over rough terrain. The low profile design avoids damage from rocks whiles Shimano's chain stabilizing technology reduces chain drop and makes for a quiet drivetrain in all gear positions.

The 1x11-speed Shimano Shadow RD+ rear derailleur keeps the drivetrain stable on the trail and its low profile design helps it avoid damage from rocks.

It also features a chain stabilizer, which reduces chain drop, slap, and noise. This also helps decrease the rear derailleur and chain tension in low gears. The Shimano Deore M5100 features a bigger 13T pully for added control and shifting precision.


  • Compatible chain: HG-X11 11-speed
  • Total capacity: 40T
  • Direct mount attachment (Conventional)
  • Fluoric coated link bushings: 7
  • Low sprocket maximum: 51T
  • Low sprocket minimum: 51T
  • Top sprocket maximum: 11T
  • Top sprocket minimum: 11T
  • Pulley teeth: 13T
  • Pulley cage: SGS
  • Total capacity: 40T

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Mfg PartNum: IRDM5100SGS 


Max Tooth: 51T 


Min Tooth: 11T 

Articles will open in new tab.

Comparing bottom bracket types and standards.
You wanna go fast? Join the ceramic revolution!
Make your upgrades count. Here's the equipment that will help you ride your bike faster.
Campagnolo vs. Shimano vs. SRAM: demystifying groupsets.
What to consider when selecting a crankset for your road bike.