Heerenveen, The Netherlands

From the 1977 catalog

    Koga is made up from the names of GAastra and KOwalik (his wife).  Andries Gaastra started importing bikes made by Miyata. He also started importing Shimano, which business later turned into Shimano Europe. Koga frames are now sourced elsewhere (Hodaka?) and Miyata has been dropped. A son of Gaastra has started a high end brand (Idworx & Gaastra)... Koga is now owned by Accell. 
                       Marten Gerritsen
 on the Classic Rendezvous Google group

History on Company's web site HERE     Catalogs from 1976 HERE

Click on small pictures to see larger versions                       3.14.2016


Have you original Koga-Miyatas bikes to add here?
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