I just finished building a beautiful 80 cc powered mountain bike. I'm in British Columbia so anything 50 cc's and over must be licensed and insured. I spent a lot of today chasing around the government to try to get this all done and in the end they said...this is a motorcycle and motorcycles must have motorcycle frames so you cannot licence it ... grrr. Anyway I saw a picture on this site of a 50 cc 4 stroke anyone know where I can get more information about buying one... and if they are actually a little smaller than 50 cc?