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.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
| Color | Black |
| Rings | 50/34, 52/36 |
| Number of Chainrings | Double |
| Crank Length (mm) | 160, 165, 170, 172.5, 175 |
| Crank Intended Use | Road |
| Drivetrain Speeds | 12 |
| BB Included | No |
| Pedal Spindle | 9/16" |
| Spindle Interface Type | Shimano Hollowtech II |
| Chainring BCD | 110 Shimano Asymmetric |
| Chainline/Hub Compatibility | 130 Hubs |
| Defined Color | Black |
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