The Shimano Ultegra FC-R8100 crankset is part of Shimano's 12-speed road lineup, delivering quick, precise front shifting and efficient power transfer. Refinements for seamless 12-speed shifting build on Shimano's established transmission efficiency. The crankset is now offered in an expanded range of arm lengths, including shorter options that suit smaller riders, triathletes, and cyclists exploring shorter cranks.
Shimano's HOLLOWGLIDE structure reduces weight while maintaining strength, which supports better power transfer and quicker, more precise front shifting. The crankset balances stiffness, strength, weight, and rotational performance for consistent feel under load. Two chainring combinations let riders match gearing to their terrain, and the range of arm lengths helps riders with specific biomechanical requirements dial in fit.
Quick Facts
| Feature |
Specification |
| Compatibility |
Shimano 12-speed road drivetrains |
| Groupset |
Shimano Ultegra R8100 |