During the rapid industrialization of post-war Japan the motorcycle industry employed the latest materials and equipment as well as skilled engineers from other specializations. The products developed suited post-war Japan and were of a higher quality and lower cost than competitors. By constantly investing in superior technology, leveraging mass production techniques developed during the war and with the support of a complex network of loyal suppliers, four Japanese firms established platforms that dominated the global motorcycle industry and they have managed to defend that position until today.

The above links examine some aspects of these corporations.