7000 series cold forged hollow aluminum crank arms, alloy chainring bolts, and nickel plated SG-X chainrings. 9 Speed Compatible.
We recommend using a Shimano Ultegra 8-spline V1 109.5mm BB-6500 Bottom Bracket with these as the Dura-Ace ones blow out too quickly.
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Keywords: Shimano, Dura-Ace, FC-7701, Crank, Set