A workshop 5-pack of the Shimano Deore RD-M5100-SGS long-cage rear derailleur — the same reliable 11-speed unit trusted by trail riders worldwide, supplied in a dealer quantity ideal for bike shops and service centres. The RD-M5100-SGS delivers smooth, consistent shifting across the full 11-51T gear range with Shimano's SHADOW+ clutch keeping the chain under control on rough terrain.

Highlights

  • SHADOW+ clutch technology: Built-in chain stabiliser with a simple on/off switch significantly reduces chain slap, noise, and chain drop on rough trails without affecting shift quality.
  • Low-profile SHADOW design: Compact cage profile sits closer to the bike, reducing the risk of rock strikes and damage on technical terrain.
  • Long SGS cage: 40T total capacity supports wide-range 11-speed cassettes up to 51T — compatible with the CS-M5100-11 (11-51T) cassette.
  • 13-tooth guide and tension pulleys: Larger pulleys reduce friction and improve chain articulation through the full cassette range.
  • Durable composite construction: Aluminium body with steel cage plates, stainless steel hardware, and GFRP composite components for long-term reliability.
  • Seven fluorine-coated pivot bushings: Reduced friction at every pivot point for smoother action and extended service life.
  • Workshop economy: Pack of five units — lower per-unit cost for workshop builds, service stock, and fleet maintenance.

Deore M5100 Series

The Deore M5100 drivetrain is Shimano's capable trail-focused groupset, engineered for riders who demand reliable performance on varied terrain without the premium price of XT or XTR. The RD-M5100-SGS sits at the centre of the 1×11 drivetrain, pairing with Shimano 11-speed shifters and HG-X 11-speed chain.

Compatibility & Fit

Designed for 11-speed MTB drivetrains. Requires a standard rear derailleur hanger (10×1mm thread). Compatible with Shimano 11-speed HG-X chains (CN-HG901-11, CN-HG701-11, CN-HG601-11, CN-LG500). Maximum low sprocket: 51T. Maximum top sprocket: 11T. Total capacity: 40T. Designed for use with the CS-M5100-11 (11-51T) cassette. Works with Shimano SL-M5100 and compatible 11-speed MTB shifters. Each pack contains five (5) individual RD-M5100-SGS derailleurs.

Shimano offers a limited warranty covering defects in materials and workmanship. For warranty support, return the item to Tune Cycles.
  • Shimano SHADOW+ clutch with on/off switch — reduces chain slap and drop on rough terrain
  • Low-profile SHADOW cage design minimises rock-strike damage
  • Long SGS cage — 40T total capacity, supports 11-51T cassettes
  • 13-tooth guide and tension pulleys for smooth chain articulation
  • Seven fluorine-coated pivot bushings for reduced friction and long service life
  • Composite construction: aluminium body, steel cage plates, GFRP components
  • 11-speed compatibility with HG-X 11-speed chains
  • Workshop 5-pack — economical for bike shops and service centres
SeriesShimano Deore M5100
Speed11-speed
Cage lengthSGS (Long)
Total capacity40T
Max sprocket (low)51T
Max sprocket (top)11T
Pulley teeth13T guide / 13T tension
ClutchSHADOW+ (on/off switch)
Hanger mountStandard (10×1mm)
Chain compatibilityShimano HG-X 11-speed (CN-HG901-11, CN-HG701-11, CN-HG601-11, CN-LG500)
ColourBlack
Pack quantity5 units
SKU SHM-JRDM5100SGS5PK
Barcode # 9315477716394
Brand Shimano

More From This Category