Here is some recent ExtremebajaKarts. There is a larger size available now for adults set up for street bike engines. Rolling chassis or turn key with your motor.
Thanks the new car is very comfortable for adults, adults fit in our other cars but not like this one. The overall size is 113" long and 69" wide for the single seat and 73" wide for the two seat.
Hey Yoshi
I just found those, they are ITP Ultracross 26"x10" and they mount on 15" wheels. They seem to be a very strong tire.
I really like the look, I think i'll get a set of them for one of the SXS i'm building to see how they do, the ones I run now are just so aggressive, too agressive for much sand use I think.............