Ultegra FC-R8100

The ULTEGRA FC-R8100 crank performs two vital functions: transferring your pedaling effort into the drivetrain and ensuring the fastest, most precise front shifting available. Thanks to HOLLOWTECH II and HOLLOWGLIDE technologies, Shimano's class-leading chainring designs, the FC-R9200 strikes the optimal balance of stiffness, strength, weight and rotational performance.
• Optimal balance of stiffness, strength, weight and rotational performance
• HOLLOWGLIDE structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting
• Available chainring options: 52-36, and 50-34T, and crank lengths: 165, 170, 172.5, and 175mm
• HOLLOWTECH II Technology
• BB set not included