Shimano Ultegra FC-6800, Dura-Ace FC-9000, Ultegra FC-R8000, Dura-Ace FC-R9100, FC-R9100P

Hazard

The bonded crank parts can separate and break, posing a crash hazard to riders.

Is this yours?

11-Speed Bonded Hollowtech II Road Cranksets in models FC-6800, FC-9000, FC-R8000, FC-R9100, and FC-R9100P manufactured before July 2019 (bearing one of the listed two-letter production codes KF–RF on the back of the crank arm where the pedals attach), sold individually or on complete bikes from brands such as Trek and Specialized; affected arms are printed with 'Ultegra' or 'Dura-Ace' logos.

What to do

Stop using the crankset immediately and contact an authorized Shimano dealer for a free inspection; if bonding separation or delamination is found, a free replacement crankset and installation will be provided.

Source: U.S. Consumer Product Safety Commission (CPSC), public-domain recall data. Quiver is not affiliated with or endorsed by the CPSC. We match recalls by brand and part type — confirm your exact unit against the official notice before acting.