All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions. Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/ SW-R671 2-button TT/Tri shifter set have 600mm length built-in E-tube wires, controls front and rear derailleurs. Not compatible with Dura-Ace 7970 Di2 systems.
Specifications
More Information
Brand
Shimano
Manufacturer Part Number
ISWR671P
UPC
689228728332
Unit of Sale
Shifters Only
Shifter Type
Bar End
Shifter Speed
2x11 Speed
Shifter Actuation
Electronic
Position
Pair
Color
Black
Weight (pair)
95g
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