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
