Precision electronic shifting meets proven trail durability in the Shimano Deore XT Di2 RD-M8050-GS. Built for 11-speed mountain drivetrains, this medium-cage rear derailleur combines Shimano's Shadow RD+ clutch technology with E-Tube electronic control — delivering crisp, consistent gear changes in every condition, from fast singletrack to technical climbs.

Highlights

  • Shimano Deore XT Di2 electronic shifting — precise, repeatable actuation every time
  • Shadow RD+ clutch system minimises chain slap and prevents chain drop on rough terrain
  • Medium cage (GS) — suits 1×11 up to 46T and 2×11 up to 42T rear sprockets
  • 35T total capacity with a maximum 10T front chainring differential
  • Compatible with Shimano E-Tube platform for custom shift programming and firmware updates
  • Multi-shift and synchronised shift modes supported (requires SC-MT800 or SC-M9051 display unit)
  • Construction: aluminium, stainless steel, steel, and glass-fibre reinforced plastic (GFRP)
  • Weight: 329 g

Shadow RD+ Technology

Shadow RD+ combines a low-profile, inward-facing geometry with an integrated clutch mechanism. The clutch applies friction to the derailleur cage, keeping chain tension consistent and preventing the chain from bouncing off the chainring on rough trails. Engaging and disengaging the clutch is quick and tool-free, so you can adapt between rough off-road riding and smoother terrain without compromising shifting performance.

E-Tube Di2 System

As part of Shimano's E-Tube ecosystem, the RD-M8050-GS connects to other Di2 components via wired junction. Using the E-Tube Project app (iOS/Android), riders can customise shift mode, button mapping, and synchronised shifting behaviour. The system also supports over-the-air firmware updates to ensure long-term compatibility as the E-Tube platform evolves. All components in the system must run the same firmware version for reliable operation.

Compatibility & Fit

The RD-M8050-GS is designed for 11-speed Shimano Deore XT Di2 (M8050 series) drivetrains. It integrates with both 1×11 and 2×11 configurations — use 1×11 with cassettes up to 46T, or 2×11 with cassettes up to 42T and a maximum front chainring difference of 10T. Compatible with Shimano Deore XT M8000 mechanical components in mixed drivetrain builds. Requires compatible Di2 junction and battery; not compatible with wireless (EW-WU111) standalone — a junction unit (EW-RS910 or SM-JC40) is needed. All Di2 components must share the same firmware version.

Shimano backs the Deore XT Di2 RD-M8050-GS with a 2-year warranty against defects in materials and workmanship from the date of original retail purchase. This warranty does not cover damage resulting from improper installation, misuse, normal wear, or failure to follow Shimano's maintenance guidelines. For warranty support, return the item to Tune Cycles.

  • Shimano Deore XT Di2 electronic rear derailleur, 11-speed
  • Medium cage (GS) — 1×11 max 46T rear sprocket, 2×11 max 42T rear sprocket
  • Total capacity: 35T; max front chainring differential: 10T
  • Shadow RD+ clutch for chain stability on rough terrain
  • Low-profile Shadow design reduces trail debris contact
  • E-Tube compatible — programmable via E-Tube Project app
  • Supports multi-shift and synchronised shifting modes
  • Materials: aluminium, stainless steel, steel, GFRP
  • Weight: 329 g
SpecificationValue
Part CodeRD-M8050-GS
SeriesDeore XT Di2 (M8050)
Speeds11-speed
Cage LengthMedium (GS)
Max Rear Sprocket (1×11)46T
Max Rear Sprocket (2×11)42T
Min Rear Sprocket11T
Total Capacity35T
Max Front Chainring Differential10T
ClutchShadow RD+ (friction clutch)
Shifting SystemElectronic (Di2 / E-Tube)
MaterialsAluminium, stainless steel, steel, GFRP
Weight329 g
ColourBlack
SKU SHM-IRDM8050GS
Barcode # 4524667847328
Brand Shimano
Shipping Weight 0.3000kg
Shipping Cubic 0.001000000m3
Unit Of Measure each
Must be installed and serviced by qualified bicycle mechanic

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