Right now on my puch, I am getting 40-45 mph. Flat out, no wind, perfectly level, I'm just hitting 42. I want to get it up to the 50 range for cruising.
My current setup:
Athena 70cc reed kit
50cc HC head
case ported to kit
What can I do without changing the kit that would squeeze a few more mph without sacrificing too much more bottom end?