DURA-ACE REMOTE TIME TRIAL SHIFTER (SINGLE BUTTON)
No need for time triallists and triathletes to choose a shifter position - with Di2 multiple shift controls are possible. Use Dual Control levers on the base bars and satellite controls on aero extensions. The controls work together - shift from base bars or in the aero position, instantly.
Multiple control positions mean shifts are always close at hand
Fast, accurate, effortless shifts
Single-button controls minimize movements for maximum aero efficiency