They are claiming that the bikes are single vehicle imports :marked CCIB, that was the system used prior to 2003 when they changed to all products requiring a CCC mark.

They claim that all the products they sell have the mark of CCIB and in that I would assume they are 1989-2002 models and should have the documents that would validate them for that period from which they were originally imported.

http://www.ccc-mark.com/

The above site would be a good place to research your question, that being how can a verify a used motorcycle is legal.