The Ducati Streetfighter V4 and Ducati Streetfighter V4 S are being recalled in the United States because of issues concerning their flywheels.

The issue stems from the fact that the generator rotor (flywheel) could have a potential metallurgical issue – the steel bars used to form the flywheel may have cracks that even after the forging process are still present on the final component.

This could lead to the flywheel breaking during use.