Shimano has just announced a new Dura-Ace Di2 satellite shifter aimed at sprinters that allows them to shift the rear derailleur from the drops while maintaining a firm grip on the handlebar.
The small lever buttons can be mounted anywhere on the bar and plug into existing dual control levers. There are separate buttons for left and right, with the right hand shifter handling downshifts and the left taking care of upshifts.
Shimano has already provided alternative shift button placements with their electronic aero-bar end shifters for triathletes and time trialists and their remote button module for easier shifting from the top of the bar. Now, sprinters have an option all their own.
They’ll be available come February 2011, pricing isn’t set.