One of the most professional looking teams was from California. Orange County infact, my old stomping grounds.
They had a 2500cc Harley for the open class!
And this sahweeet KTM LC4 based bike. I'm partial to LC4s and this one looked like it started its life as a factory 660 Supermotard judging by the frame and carbon fiber subframe.
A Harley XR750 based machine.
The other popular tire setup was big chains like this.
There were quite a few Yamaha XS650 based bikes, this is one of the nicer ones.
More to come.