Anyone out there with the huashang or Honda 50cc should check out this fab shop. its expensive, but i bet its good. they have clutches and gearboxes that are specially cnc machined to fit the GXH50 motor...and MADE IN THE USA (that was for you AZkonic). So in short, anyone who is sick of their whining grubee knock off gearbox should check these guys out. The are Station Inc., out of Oklahoma City, OK.