Uploaded March 2018 | Updated September 2026, 1 hour ago
The Firefly is a clip-on 45cc motor built by Vincent HRD in 1953. In this video there are two Firefly motors, each mounted on different vintage Triumph bicycles. The Firefly was built for only 3 years and is a must-have for any Vincent motorcycle collector.
The Firefly is a clip-on 45cc motor built by Vincent HRD in 1953. In this video there are two Firefly motors, each mounted on different vintage Triumph bicycles. The Firefly was built for only 3 years and is a must-have for any Vincent motorcycle collector.










