![Load image into Gallery viewer, Shimano-Ultegra-FC-8100-12-Speed-Crankset-175-mm-Double-12-Speed_CKST2102](http://365cycles.com/cdn/shop/files/CK0647_021f42ee-b58b-4f33-ad08-dffd6a734b8a_400x@2x.jpg?v=1717557860)
![Load image into Gallery viewer, Shimano Ultegra FC-R8100 Crankset 175mm 12-Speed 52/36t Hollowtech II](http://365cycles.com/cdn/shop/files/CK0647-01_d12c89b3-1749-4a1d-ba46-ff199a66245b_400x@2x.jpg?v=1717557860)
![Load image into Gallery viewer, Shimano Ultegra FC-R8100 Crankset 175mm 12-Speed 52/36t Hollowtech II](http://365cycles.com/cdn/shop/files/CK0647-02_a61392e9-a2f0-4bc6-97a5-88982f1963d1_400x@2x.jpg?v=1717557860)
An integral part of the Shimano Ultegra 12-speed road lineup, the FC-R8100 crankset builds upon Shimano's legendary front shifting and transmission efficiency. With new refinements for seamless 12-speed shifting, the Ultegra crank is now offered in a wide variety of lengths, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanic requirements.
- 148mm Q-factor
- 44.5mm chainline
- 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
An integral part of the Shimano Ultegra 12-speed road lineup, the FC-R8100 crankset builds upon Shimano's legendary front shifting and transmission efficiency. With new refinements for seamless 12-speed shifting, the Ultegra crank is now offered in a wide variety of lengths, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanic requirements.
- 148mm Q-factor
- 44.5mm chainline
- 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