No it wasn't. The largest displacement 2-cycle motorcycle Kawasaki ever made was the 750cc H2 Mach IV, which was a 3-cylinder 2-stroke. The 900 was a 4-cylinder 4-stroke.
Kawasaki triple Two strokes were Dangerous and I have first hand experience!
I was Rideing a ‘69 CB750 daily at the time-—a Lot.
It had it’s issues as well But also a trend setting Machine!
That Four cylinder was like a Ferrari.