Royal Enfield is the name by which the Enfield Cycle Company (part of the "Royal Small Arms Factory Enfield Lock", one of the main British armaments and machinery factories) built motorcycles, bicycles, agricultural and industrial machinery. The link with the parent company is evidenced by the logo used (a cannon) and by the motto "Made like a gun, goes like a bullet" (Built like a cannon, it goes like a bullet). The use of the Enfield brand was authorized by the Crown in 1890; the original site was in Redditch, Worcestershire. Royal Enfield is therefore advertised as the oldest motorcycle brand still in operation, although the factory is no longer in the country of origin.
The Bullet model, in its variants, is considered the motorcycle whose production line is the longest lasting of all time. In 1899 a series of quadricycles with the De Dion engine was produced, in 1901 a prototype of a bicycle moved by a 170 cm³ Minerva motor was built. In 1906, Enfield Autocar Company Limited was founded to develop projects for cars and motorcycles. In 1911 the Enfield brand was able to boast the coveted "Royal" qualification and in 1912 the 180 model appeared: equipped with a sidecar, it was equipped with a 750 cm³ twin-cylinder. In the same period the model with 425 cm³ engine was noted at the Tourist Trophy of the Isle of Man and at Brooklands.
During the First World War the Royal Enfield supplied weapons and motorcycles of various kinds to the British armed forces; among others, an 8 hp motosidecar equipped with a Vickers machine gun and another motosidecar adapted to a litter to transport the wounded. Royal Enfield also won a contract for the supply of motorcycles to the Russian Empire.
- Exterior Colour Dark Green