Originally Posted by T-Mar

It was common practice for companies to market bicycles under a different brand name than parts and accessories. Often, they were separate business entities, as this offered some financial and legal advantages. For instance, Western States Imports sold bicycles under the Centurion and Diamond Back brands but marketed parts and accessories under their Avenir brand. Similarly, West Coast Cycle Supply sold bicycles under their Azuki and Nishiki brands but their aftermarket parts and accessories were labelled as Cycle Pro. (They would later sell off the parts and accessories business, bringing out a Cycle Pro bicycle but that's another story). Concorde and Ultech appear to be a similar situation, with both names being owned by the same parent corporation.