You would be better off to go with a used frame than a Chinese copy or an open mold. You are completely at their mercy if something goes wrong and you need service. I have one that I could not get parts for after the seat mast topper proved to be the wrong size. They merely stalled me until the warranty expired with a song and dance about a guy in Florida handling their parts.Once the warranty expired they stopped answering my emails. I had 3 chinese frames and 2 needed parts or work. Totally not worth the risk.