Shimano Groupset

Hazard

The two bonded halves of the crank arm can separate and break, posing a crash hazard. CPSC reported 4,519+ separation incidents and six injuries (fractures, joint displacement, lacerations). Affected: Ultegra FC-6800/FC-R8000 and Dura-Ace FC-9000/FC-R9100/FC-R9100-P 11-speed bonded road cranksets.

What to do

Stop riding immediately and contact a Shimano dealer for a free inspection and, if needed, a free replacement crankset.

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.