Di2 Compatibility - mix Ultegra, DURA-ACE, XTR, XT and GRX components
Did you know that you can mix Di2 components from different series and categories? Mixing derailleurs is not recommended, but anything else is fair game!
TT / Aerobar 2-button Shifting Switches
Ultegra SW-R671
The two-button SW-R671 remote TT/Triathlon shifter allows for shifting when using TT aero bars. It is mounted at the end of the aero bar/extension. It is compatible with all 11-speed Di2 series, except 7970.
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Unlike all other current TT/Triathlon switches, these SW-R671 switches have two buttons each. This means they can be used to shift the front derailleur as well as the rear derailleur. They are not 12-speed compatible.
All other aerobar shifters have only one button each, meaning that those newer shifters will work with Synchronized Shift only.
Wires attached
These switches come with EW-SD50 wires attached to them. The (fixed) length of these wires is 600mm for each of the shift switches, which should be long enough for most TT bikes and aero extensions.
Specifications
- Model code: SW-R671
- Series: Ultegra (6870)
- Weight: 47g (per shifter)
- Speeds: 10 / 11
- Number of switches: 2
- SD50 ports: 1
Related components
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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
Additional function for ANT- D-FLY Channel switch setting for cycle computer
3.1.0
Firmware updated
3.0.1
Update accompanied with SW-S705
3.0.0
Adjust compatibility
2.2.0
Improving usability of data uploading
2.1.0
Improved stablility of unit communicationEnhancement of energy-saving
2.0.2
Firmware updatedEnergy saving by updating ver.2.0.1 or later version
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