New Rules: 1971 BSA A70L 750 Lightning

A last gasp model from a dying motorcycle manufacturer, the BSA A70L 750 Lightning was too little, too late.

AMA Class C rules required competing machines to be based on production bikes, meaning that BSA would have to produce at least 200 750cc twins to homologate their new racing machine for competition use. The A70L 750 Lightning was the result.
Photo By Stephen Clark