Designed to work with the Ultegra 11 speed group, the SHIMANO Ultegra FC-6800 2x11 speed chainset offers incredible performance at an affordable price.
With the same 4 branch design and large hollow chainring as the Dura Ace 9000, this chainset guarantees very light weight while ensuring optimal rigidity.
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Axle Diameter : 24 mm
Bottom Bracket Included : No
Crankarm Length : 170 mm, 172.5 mm