Maxed out an '84 700 Nighthawk S.
How fast? I Don't know. 135ish?
Saw 150-155 indicated on a '90 FZR1000.
Went 9-9,500rpm
on a modded '83 Honda V65 Magna with 3:40 gears.
140-150? Scared me.
Gonna explore the upper limits of my CBR1100XX this summer.
Will have GPS along so I can post a picture.
175-180?

I likely lack the testicular mass to reach those speeds on 2 wheels,
but we'll see...