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Shimano
Dura-Ace 7710 Track Crankset
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Painstakingly designed to realize the ultimate balance of lightweight and rigidity, Shimano's model 7710 Dura Ace track crank provides the fraction of a second advantage that's often the difference between winning and losing on the banked oval.
Constructed of hollow arms and the Octalink V1 splined bottom bracket attachment as used in the Dura-Ace 9 speed road crank. However, the track arms are Keirin certified (NJS) and somewhat more robust than their road counterpart.
The cranks are available in 165, 167.5, 170, 172.5 and 175 mm. lengths, the bolt circle diameter measures 144, which is compliant with modern track specifications.