The Shimano Deore RD-M5100-SGS Rear Derailleur delivers smooth, accurate, and stable shifting performance for 1x11-speed MTB drivetrains. Built with SHIMANO SHADOW RD+ technology, it offers exceptional chain stability and quiet operation even on the roughest terrain.

Its low-profile design minimizes exposure to rocks and trail debris, while the integrated chain stabilizer effectively reduces chain slap, noise, and drop — ensuring confident, uninterrupted performance on demanding trails. The larger 13T pulley wheels enhance drivetrain efficiency and chain management, providing precise shifting and durability for long rides.

Perfectly optimized for wide-range 11-speed cassettes with up to a 51T low sprocket, the Deore RD-M5100 ensures smooth transitions and dependable performance for aggressive trail riders and all-mountain enthusiasts alike.

Key Features:

• Model: RD-M5100-SGS

• Series: Shimano Deore M5100

• Speed Compatibility: 1x11-speed

• Technology: SHIMANO SHADOW RD+

• Mount Type: Direct Attachment (Conventional)

• Max Front Difference: 0T

• Total Capacity: 40T

• Low Sprocket Range: 51T (Max/Min)

• Top Sprocket Range: 11T (Max/Min)

• Pulley Size: 13T

• Link Bushings: Fluoric-coated (7)

• B-Axle: Hollow Axle Design

• Low-profile design reduces impact risk

• Stable, silent drivetrain in all gear positions

• Chain stabilizer enhances retention and quietness on rough terrain