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 SW-9071 (single-button controls minimise movements for maximum aero efficiency)
  
• Double and single button controls on aero bar shifters

Features Shimano Ultegra E-Tube SW-R671 Remote Triathlon Shifter