Fock the AMA . . . .
"Although it initially displaced 700cc, the machine was called the TZ750 because it had been designed for the Formula 750 class in Europe. The FIM had banned it before the TZ ever turned a wheel, but the machine remained AMA-legal."
AMA banned it after 3 races.
"With the bike capable of hitting 240kmph, AMA thought that it was outright dangerous to have a bike like this and so new rules were set and the TZ750 was banned."