Shimano's Dura-Ace SW-R9160 TT bar end shifters feature a refined ergonomic shape and simple single-button design. Provides quick shifting while riding in the aerobars Utilizes Shimano synchronized shift program allowing each bar end shifter to be programmed to upshift or downshift the rear derailleur while the Di2 computer decides when to shift the front derailleur for the optimal front and rear gear combination Firmware updates available through Shimano's E-Tube project
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