Motor Unit for Internal Geared Hub
Alfine MU-S705
This Motor Unit is meant to be used with the S705 / S7050 Internal Geared Hubs - both 8 and 11 speed versions.
It is because of this part that you can use Di2 to shift Internal Geared Hubs. It has one E-Tube Port and connects to the rest of the Di2 system. You can then use regular Di2 shifters to control your hub.
Specifications
- Model code: MU-S705
- Series: Alfine (S7050 / S705)
- Weight: 147g
- Speeds: 8 / 11
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!
2.5.0
Improving shifting performance for SG-S7051Bug fixing
2.4.4
Fix bug with SM-BTR2<br /><br /> Improvement of Start Mode (E6000 series)
2.4.2
Adjustment for EW-EX010 Improvement of function
2.4.0
Improving usability of data uploading
2.3.0
Improved stablility of unit communicationEnhancement of energy-saving
2.2.1
Firmware updated