Described by The Motor Cycle as "most economical, comfortable and fast, handy in traffic, excellent steering and brakes", the B31 is one of the most popular machines on the road. Many outstanding features combine to make this machine far ahead in performance and value - duplex cradle frame, swinging arm rear suspension, full width aluminium alloy hubs and powerful brakes, quickly detachable rear wheel - are but a few.

BSA 1956 Models
Scanned from an original sales brochure kindly loaned by MotoRetro