had a hand gear change, and a three-speed gearbox built under licence from AJS. Martinsyde's engine was very flexible and became popular for off-road trials competition, where the singles quickly gained a reputation for reliability, at Brooklands, where Martinsyde won the team award in 1922, and the Scottish Six Days Trial.

Martinsyde motorcycles were offered with sidecars and the Martinsyde 680 was followed by a 500 cc