The Shimano FC-9000 Crank Arm Fixing Bolt (B-Type: 16 mm) is engineered to firmly secure the crank arm to the bottom bracket spindle. This small yet critical component ensures drivetrain stability and smooth performance during demanding road cycling. Optimized for Dura-Ace Performance: Specifically designed for the Shimano Dura-Ace FC-9000 crankset, this fixing bolt provides a precise fit and maintains the high standards of the flagship Dura-Ace series. It’s built to complement the lightweight and stiff construction of the crankset. Durable Construction: Crafted from premium materials, the B-Type 16 mm fixing bolt resists wear and loosening under high pedaling forces. Its robust build makes it suitable for both competitive racing and everyday high-mileage use. Easy Installation: With precision machining, the fixing bolt installs seamlessly, ensuring a tight and secure connection. Its design allows for quick replacement while maintaining Shimano’s strict reliability standards. As an original Shimano replacement component, the FC-9000 Crank Arm Fixing Bolt guarantees compatibility, safety and performance, preserving the integrity of your Dura-Ace drivetrain.