Registration - YSJ 491

Chassis No. - BB31.3534

M.O.T. - Exempt

Odometer - 9,601

The vendor bought this B31 from a friend in 1999. It was in pieces at the time and he’s since restored it to the current condition. The gearbox was completely rebuilt by a specialist, as were the front forks. The rear suspension units have also been fully overhauled, the frame powder-coated and all the nuts and bolts replaced with stainless steel items purchased from BSA dealer Lightning Spares of Sale. The vendor volunteers that the primary drive, which was the subject of an older restoration, would now benefit from some attention, and that the whole machine deserves a degree of recommissioning. In summary he presently rates the frame, suspension and red paintwork as ‘excellent’, the cycle parts as ‘good’, and the single-cylinder 350cc engine, four-speed gearbox and brightwork as ‘average’. ‘YSJ 491’ comes complete with a selection of spares and a modest history file containing its original BSA service sheets, photographs etc. Based on pre-war designs, BSA’s B31 was the company’s first offering following the cessation of hostilities. It was powered by a single-cylinder four-stroke engine of 350cc and c.17bhp. Swinging arm rear suspension was introduced in 1954 and the model continued in production until 1959.