The Shimano Dura-Ace FC-R9200 crank performs two vital functions: transferring your pedaling effort into the drivetrain and ensuring fast, precise front shifting. With Shimano's class-leading chainring designs, the FC-R9200 is built for reliable performance. HOLLOWTECH II crank arms help ensure low weight, while the HOLLOWGLIDE structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting.