The Shimano Dura-Ace FC-R9200 Crankset is engineered for exceptional performance, designed to transfer your pedaling effort into the drivetrain seamlessly while delivering the fastest and most precise front shifting available. Featuring HOLLOWTECH II crank arms, this crankset ensures a lightweight design without sacrificing strength, making it an ideal choice for road cycling enthusiasts.Optimal balance of stiffness, strength, weight, and rotational performanceHOLLOWGLIDE structure reduces weight while maintaining strength for superior power transfer and quicker, more precise front shifting