Superb Four Motorcycles of the 1920s
Designed by W. F. Hooper
Hooper 1921, horizontal engine
Superb Four 1920
Superb Four 1920, OHC 4 Cylinder Engine
Superb Four Valve Diagram
Superb Four Motorcycle of 1920
The last word in motor cycle engines - the overhead camshaft four-cylinder Superb.
Superb Four 1920
Frame of the Superb Four 1920