1955
Colleda COX

With its displacement upgraded from 90cc to the standard 125cc, the Colleda COX was equipped with a state-of-the-art steel frame. Its 4-stroke OHV single-cylinder engine had a flywheel magneto ignition with automatic spark advance, generated 4ps at 5,000rpm. The standard 3-speed transmission yielded a top speed of 75km/h.

1953
Diamond Free

Released in March 1953, the Diamond Free proved hugely popular, with its double-sprocket wheel mechanism for avoiding power loss. With 2-speed transmission and output of a mere 2ps at 4,000rpm, it had a maximum speed of 60km/h. The combined effect of victory in the Mt. Fuji hill climb race and the machine's showing in across-Japan performance testing led to an explosion in demand. The displacement was subsequently increased from 60cc to 70cc