Does anyone know the brand/model that was stock on RL20/Prostylers?

It's the type where the top race presses into the headtube, the
bearings sit on that, then the 'cup' threads down over it all.
I know dynatrons are like that. Anyone know some other brands
and especially the og for that bike?

Thanks guys!

The head set is a Hatta MX-10. The 85 RL20's came with a chrome MX-10 and the 86 RL20's came with a Black MX-10.

dang, I just knew it would be something expensive like that.
All I really need is the top press-in race since mine is pretty
chipped out.

Ah well, I might have one squirreled away somewhere.

Thanks, Crowe!