Triumph Pre-Unit Twins, Hardback

Triumph's pre-unit twin-cylinder motorcycles were produced from 1938 to 1962, with engine sizes of 350cc, 500cc and 650cc. Ridden both on the road and in competition, the bikes formed the basis for Triumph's success through the 1940s to the 1960s. With their superb styling and reliable engines, they were a favorite both at home and abroad.