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Lengths: 170, 172.5 or175mm
Chainrings: 39 x 53
Weight: 709 g. with Bottom Bracket

The Dura Ace FC-7800C carbon crank uses an aluminum hollow-core base that resembles an aluminum Hollowtech II crank design. The difference is that the aluminum is significantly thinner because a carbon fiber laminate layer completes the construction to achieve the uncompromising Dura Ace level rigidity and strength at a weight lighter than all aluminum construction. Saves over 30 grams from the standard aluminum Dura Ace crank/bottom bracket assembly and actually increases rigidity by 10%! The bottom bracket and left arm construction is the same design as the latest version of XTR allowing for a lighter bottom bracket assembly and more precise adjustment of the bearings. 709 g. with bottom bracket. 172.5 length.

Item Code: SSBIASS1