Shimano Shimano Double Ring Crank 2x10 FC-7900 (Dura-Ace)

This aerodynamically designed crankset combines new engineering features with remarkable weight savings.

The crank is made of thin walled aluminium combined with a hollow outer chainring to save weight and improve stiffness. The hollow chainring is 20% stiffer for optimal power transfer and more durability. Other changes include redesigned chainring teeth for better contact with the chain to improve power transfer.

Additional weight is saved by an aluminium-carbon composite axle. In spite of weight reduction against the previos model the crankset's stiffness reaches the same high level.