I agree, it looks very much like a motorcycle steering damper and a Google search or contacting local motorcycle shops may come up with a replacement. Is there any information engraved on that damper such as maker and model number?
You said you contacted Freedom Ryder. Did you e-mail or phone? Phone calls, particularly repetitive ones, are harder to ignore than e-mails. Their web site shows a somewhat different damper location and size on the current models from the one you are working on so they may have to go back in the archives to get you a part number.