Welcome to the forum!! Post a few pics of the kart you have and we will give you a hand. Some places to buy from would be gokartgalaxy, mfgsupply and bmikarts
Welcome to DIYGK! I'm sure you'll end up getting steered in the right direction here. And the hobby itself, excellent for a parent/child learning and bonding experience. Have fun, and maybe let the kid ride now and then...
I see that's it's a Path Finder go kart. But can't seem to find any parts for it. Does anyone know the site for this company? Or maybe someone can tell me how the hubs can be replaced?