The Shimano Dura Ace Di2 Sprint shifter system is designed to allow you to shift the rear derailleur from the drops in an all out sprint. One lever mounts on each side of the handlebar below the shift lever hood and each lever shifts the derailleur in one direction only, making things simpler when all your energy is going to propelling yourself forward.
Features : Unmatched sprinting performance when combined with Dura Ace Di2s heroic performance under load *Shimano Reference Number SW 7972 *Mount on the drops for easy access while sprinting
Color : One Color
Size : One Size
Product dimensions : 2x6x4 inches
Product weight : 0.1 pounds
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