Shimano Ultegra FC-R8000 Crank Arm

This product is specifically the left-side crank arm only. It is designed as a direct replacement part for the Shimano Ultegra FC-R8000 crankset.

No, this arm is engineered specifically for the Ultegra FC-R8000 series. While other Shimano cranks use the Hollowtech II interface, the aesthetic finish and precise tolerances are matched to the R8000 series and may not align correctly with other groupsets.

Yes, this replacement arm includes the standard pinch bolts required to secure it to the spindle. You will need to reuse your existing crank arm fixing bolt or provide a new one if yours is damaged.

Crank length is typically determined by your bike fit and personal preference. If you are replacing an existing arm, check the inside of your current crank arm near the pedal threads; the length is stamped there. It is best to match your existing length to maintain your current fit geometry.

This component is optimized for 11-speed drivetrains. While it may physically attach to some setups, it is not recommended for 12-speed systems, as the chainring spacing and drivetrain tolerances are different.