The Dura-Ace SL-BSR1 11-speed mechanical bar end shifters provide eleven speed shifting on the triathlon or TT bike. The right shifter is 11-speed index only and designed to shift with Dura-Ace 9000 mechanical components. These shifters will most commonly be used on aero bars for the Tri/TT set up but the can also be used in the bar-end position on an old-school or neo classic machine. Includes a complete set of derailleur cables and housing.