These satellite TT/Tri shifters from Shimano let you literally extend your Dura-Ace or Ultegra Di2 shifting functions by adding additional shift controls to the ends of your aero extensions. You get the same, effortless, push-button shifting as you do from your Dual Control levers without having to leave your aero tuck. The Shimano Ultegra Di2 SW-R671 11-speed TT/Tri shifters fit into the ends of your aerobar extensions and are compatible with Dura-Ace Di2 11-speed systems as well as Ultegra Di2 10-speed E-tube electronics.
- Di2 electronic TT shifters that mount at the end of TT/Tri bars with extensions
- Quick, double-button, effortless electronic push button shifting on aero bar extensions
- Compatible with Dura Ace 9070 11sp and Ultegra Di2 10sp E-tube electronics system
- Plugs into the second port of the Ultegra Di2 levers
- Can also be used with Ultegra Di2 in a TT/Tri setup without Ultegra Di2 levers using SM-JC41 between the shifters and the handlebar junction, while awaiting the arrival of the 5-port Shimano 9070 junction box