Shimano Crank Arm Fixing Bolt

This bolt is designed for a specific range of Shimano cranksets, including Ultegra 6800, 105 5800, Sora R3000, XT FC-M770, SLX FC-M7000/665/660, LX FC-M582, and Alivio FC-4050/4060. Always verify your specific crank model number, which is typically stamped on the inside of the crank arm, before purchasing.

No, this component is engineered specifically for Shimano's proprietary interface and threading standards. It will not fit or function correctly with cranksets from other manufacturers.

Yes, you will typically need a specific Shimano crank installation tool or a compatible hex wrench, depending on the exact crankset model. Refer to the service manual for your specific crankset to ensure you use the correct tool and torque specification.

The fixing bolt is critical for maintaining the proper tension between the left crank arm and the spindle. If the bolt is stripped or damaged, the crank arm may loosen during use, which can lead to poor shifting performance, damage to the crank arm splines, or a safety hazard while riding.

This product is the fixing bolt itself. It does not include additional washers or spacers unless specified by the manufacturer for a particular crankset model. Ensure you retain any existing hardware from your original setup if required.