Originally Posted by
JohnDThompson
SunTour was a small design shop with no inherent manufacturing capabilities. SunTour's freewheels and derailleurs were made by Maeda Industries; hubs from Sanshin, cranks from Sugino, brakes from Dia-Compe, &etc.
Yes, kinda. Maeda Industries (nee Maeda Iron Works) __is__ SunTour. (
http://en.wikipedia.org/wiki/SunTour) So, they made their own freewheels, derailleurs, and shifters. The other SunTour parts were all OEM'd by the non-Shimano Japanese companies that made that product the best. Thus "SunTour" Sanshin hubs, Sugino cranks, & c as you listed.