The cmpanys been out if business for twenty years. I keep hearing the belts were just made for that specific company so now the go-karts are just considered throw away karts.Maybe https://gokarts-discount.com/belts? Or maybe just convert over to a chain drive.
St louis. I had a hard time believing they're meant to be " throw away " karts is what I've been told. Because parts are impossible to find is what I've been told.Start here.... Cogged belts this will give you ideas of measurements and terminology you will need. I can 99% say that is a plain industrial belt.
good luck let me know if you need more help, what is location?