So, I have this go kart that I need to order a wheel for and I can not seem to find the right size bolt pattern. It's a 4 bolt pattern and measuring diaganally from center of bolt to center it's 3 and 1/4 inches. which is like 82 mm. I would just change the hub completely because I have some 8" 4x4 wheels but the sprocket is bolted to the hub and I don't know where to search for a sprocket and adapter that will fit a 4x4 pattern. I'm pretty new to go kart building so forgive my ignorance. I'll try and have pics soon.