BSA followed their acquisition of Ariel with the purchase of Triumph in 1951. It was decided from the outset that BSA and Triumph would retain complete autonomy. Indeed, that policy endured for almost two decades, until BSA Triumph Group Ltd were in dire financial straits, by when a certain amount of Badge Engineering did then occur, albeit against great opposition from a loyal middle management. So, when it came to the vital introduction of unit construction motors BSA unfortunately lagged about three years behind.

BSA's 650cc A65 still sold across the globe in tens of thousands; its rugged engine also evolved into the definitive mode of propulsion in the hyper competitive world of European sidecar racing. By 1965 this machine had become the Lightning which was a natural design progression aimed at the American market.

This 1966 650 Lightning was a good base for a full restoration some years ago. The engine was 'gone-through' and is reported to run well, having been upgraded with a modern Boyer ignition. Paint is the correct BSA burgundy, and the motorcycle was treated to replated brightwork. Having covered several thousand miles since completion, this bike is presented in rider condition, and is reported to start easily and be a pleasure to ride.

The Lightning is an iconic British twin of the period and a natural choice for a spirited Sunday morning ride.