Ducati North America has recalled 156 of its 2021 Streetfighter V4 and Streetfighter V4 S motorcycles due to the possibility of the flywheel breaking. Fortunately, none of the impacted Streetfighters had made it to showroom floors.

Ducati reports that the flywheel in the 90-degree 1103cc V4 may break, damaging the flywheel’s cover and causing oil to leak on the engine. The engine oil may then leak on the rear tire, increasing the risk of a crash.

Dealers will inspect the production dates on the generator rotors (flywheels) and replace them, as necessary, prior to sale.
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https://ultimatemotorcycling.com/2020/08/17/2021-ducati-streetfighter-v4-s-recall-flywheel-may-break/