Shimano SW-R610 Di2 Remote Sprinting Shifters ?FEATURES: System is designed to be mounted in the drop section underneath the handlebar tape; a hole is cut in the bar tape so the shifter buttons are accessible Compatible only with 11-Speed Di2 systems Each Sprint shifter plugs into a dedicated port on the 11-speed Di2 STI lever No additional E-tube wires required Not compatible with ST-7970 or ST-6770 Di2 levers