Yes the CEO of Ducati North America Jason Chinock had a specially built Ducati 450 RT built so he could compete in the 1971 t0 1990 twin shock class at the Biltwell 100 which was an off road race. The bike is a beauty.
https://www.ducati.com/us/en/news/ducati-north-america-ceo-races-1971-ducati-450-rt-desmo-at-biltwell-100