The Sun Cycle Fittings Company in Birmingham
produced their first motorcycle in 1911. At first
Precision engines were used; in 1913 a model was marketed
with the short-lived Villiers inlet-over exhaust unit
construction engine; from 1914 on Villiers two-strokes
were fitted. Afterwards also engines from the Valveless
Two Stroke company were bought in. Later on Sun bought
that company and produced the Vitesse )engine themselves.
In the twenties also JAP and Blackburne power sources
were employed. In the thirties light two-strokes and
autocycles were made and in the fifties all Suns had
light Villiers engines. In 1959 Sun became part of
the TI group and in 1961 motorcycle production ceased.