It came in two paint options (brown and olive) with replica badging and even the unique army-style serial numbers painted on the tank.
Adding to the period look were the military-style canvas panniers, leather strap with brass buckles on the air box, and blacked-out exhaust muffler, engine, rims, handlebar and headlight bezel.
Royal Enfield says the Flying Flea was produced in collaboration with the British Ministry of Defence.
The bike was so light messengers could lift it on their shoulders when the trenches were too deep to be ridden over.
Royal Enfield’s military involvement has included making mobile machine gun platforms for World War I, targeting components for anti-aircraft guns in World War II and continual service with the Indian Army since the early 1950s.