Understanding Di2 derailleur specifications
Shimano front derailleur and rear derailleur specifications... what do they mean, really? This page explains all of them, and why they matter.
Shadow RD+ Long Cage Rear Derailleur
XTR RD-M9050-SGS
The Shimano RD-M9050 Shadow RD+ SGS 11-speed rear derailleur weighs 295g, features direct mount, a clutch mechanism, and smooth shifting even under heavy load.
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Its low sprocket max capacity is 40T for 3x11 setups, 42T for 2x11-speed and 46T for 1x11-speed setups. The max front difference is 18T and its total capacity is 41T.
Synchronized shift - display a required
One of the MTB displays (SC-MT800 display or the XTR SC-M9051) is required if you want to use synchronized shift with MTB derailleurs.
Specifications
- Model code: RD-M9050-SGS
- Series: XTR (M9050)
- Weight: 295g
- Speeds: 11
- SD50 ports: 1
- Total capacity: 41T
- Low sprocket max: 40T (3x), 42T (2x), 46T (1x)
- Low sprocket min: 40T
- Top sprocket min: 11T
- Top sprocket max: 11T
- Pulley teeth: 11
- Mount: direct mount / conventional
- RD type: Shadow RD+
- Clutch: Yes
Related components
View all componentsRelated pages
Micro-adjust your 11-speed Di2 MTB Rear Derailleur
Indexing Di2 rear derailleurs is done though micro-adjustment. The MTB Di2 rear derailleur process is slightly different from that of road RDs. Read how to set up your MTB rear derailleur and stop that chain rubbing noise.
Synchronized Shifting - the complete guide
Synchronized Shifting - what is it exactly? What does it do and how can you set it up? This page will guide you through the process of setting up synchro shift.
Manuals & other documents
Firmware updates
Below is an overview of all known firmware updates for this component. The changelog texts are Shimano's, and quite often they're a bit cryptic - sorry!
3.2.0
Added a function to adjust the correct rear derailleur position under the maintenance tab.
3.1.2
Bug fixing
3.1.1
Additional functionCS gear combination information (Adapting to the E-tube project ver. 3.0.0 or later)Adapting to the STEPS E8000 series
3.0.8
Bug fixing
3.0.7
Fixed SM-BTR2 bug
3.0.5
Firmware uploaded