The SOHC/4 Owners Club & web site was created as a resource for owners of the Honda single overhead cam 4 cylinder motorcycles that were offered from 1969 through 1982. The links in the menu on the left lead you to the bikes page that covers each of the Honda SOHC4 motorcycles - CB750, CB750K, CB750F, CB750A, CB650C, CB650SC, CB650, CB550K, CB550F, CB500/4, CB400F, and CB350F. The information on these pages covers the stock bikes and modified bikes such as race bikes, choppers, cafe racers, police bikes, and any number of other permutations that these bikes took on over the years. In addition to the bike-specific sections, there is a general technical section with information relative to all models.
The Owners Club section provides information on the SOHC/4 Owners Club including how to register to get your very SOHC/4 Number.
In addition to this website, the SOHC/4 Owners Club has a very active Forums section and a popular Gallery where members can post photos of their motorcycles.