Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,031 pages of information and 229,415 images on early companies, their products and the people who designed and built them.
Firefly was a motorcycle frame-kit, made in Lowestoft, Suffolk, from 1965 to 1970.
The kit was a light and well-made trials frame originally made to take the BSA C15 engine. It was later adapted to take others. Production was limited and more or less made to order, as few people knew of its existence. Although knowledge of this imporved later, the arrival of the Bultaco and changes in taxation advantages for supplying kits ended the enterprise.
The British Motorcycle Directory - Over 1,100 Marques from 1888 - by Roy Bacon and Ken Hallworth. Pub: The Crowood Press 2004 ISBN 1 86126 674 X