I've never encountered one of the Dyno Power rigs though. Are they manufactured in SA?

Hyper Power International rigs are made in SA and I believe they are popular in Australia too.
Did you see the spec on the TZR in question? Its a modified 3XV9 SPR RC Sugo kit (ex Kenny Roberts Track School). Very rare and sought after. I don't agree with the figure on the graph, but I do know that this particular bike is something special and that is all I have to say about that evil Yamathing!