+1 to cbr264I have the wheels for sale here. http://www.supermotojunkie.com/showthread.php?t=91793
just put some 100/90-16 bridgestone bt-45 tires on and you will have an awesome setup for mini moto racing.
if you wanna stay cheap stick with stock and throw some Kenda's on. The stock setup is amazing in the dirt sections and not too shabby on the pavement either.