You can sign up when you arrive. Here are the classes.
Outlaw Class 2 stoke, 4 stroke (run what you brung and hope you brung enough!)
21mm-26mm
18mm 20mm
16mm
14mm and 12mm
10mm and under BIG MANS CLASS. Rider must weigh 210lbs or over. Bike can be NO bigger than a 10mm, Aftermarket cylinders OK
10mm Aftermarket cylinder 550 cc max
10mm Stock Cylinder
7mm and 8 mm Aftermarket cylinder 550cc max
7mm and 8mm Stock cylinder Aftermarket frame ok
4mm After market cylinder Aftermarket frame ok 500cc max
4mm Stock Aftermarket frame ok
400- 550cc gas only,Stock or stock modified frame only
350- 400 ported and polished alky or gas Stock or stock modified frame only
350 Port and Polish (any Stage) Aftermarket carbs, pipe. Gas only.
350 ported and polished, pipe, stock carbs, stock frame. Gas only.
350 stock carbs, stock frame. gas only. pipe ok. stock or stock modified frame only. (this class is for stock banshees)
4 stroke Stock, pipe only 500- 700cc
4 stroke 500cc and under