Developed from the Hopwood-designed 497cc twin, the 597cc Model 99 Dominator was introduced in 1956. It had a Featherbed frame and in common with the 497cc Dominator 88 of 1955, a light-alloy cylinder head and full width hubs. These were the original “wideline” twins, a nickname derived from the broad spacing of the frame top tubes. In later years there would be slimline versions, the top tubes being cranked inward in the region of the dual seat nose. Capable of 100mph with an average fuel consumption of 55mpg.
This 1957 model is completely restored and in excellent condition.