Shimano Dura-Ace 9000 Crank Arm

This specific arm is designed for the Dura-Ace 9000 series. While it may physically attach to other Hollowtech II systems, it is engineered to match the specific stiffness and finish of the 9000-series crankset, so mixing it with other groupsets may result in aesthetic or performance inconsistencies.

No, this is a standalone replacement crank arm. It does not include chainrings, the bottom bracket, or any mounting hardware.

Crank length is a personal fit preference that affects your leverage and hip angle. If you are replacing a single arm, you must match the length of your existing crank arm to ensure your pedal stroke remains balanced and symmetrical.

The Hollowtech II interface is a Shimano proprietary standard. While many third-party bottom brackets are designed to be compatible with Hollowtech II spindles, you should verify that your specific bottom bracket shell is compatible with a 24mm spindle diameter.

This part is specifically designed as a replacement component. Please check the part number (Y1N298010) against your current crankset to ensure it is the correct side and model for your specific setup.