I've had my Speedy up to just over 120mph indicated. Actual? I stole a glance at the tach, about 6800rpm.
This is with a 16T sprocket. Other than shorty mufflers, it's stock.

Steelheart- '03 Speedmaster Black/Yellow The Hayabusa Killa 16" Shorties/140 mains/Airbox drilled Procom CDI "There is no cure for Celibacy. But we can treat the symptoms."