| MODEL | BSA B3 250 DE LUXE 1936 |
| Year | 1936 |
| Engine Type | Four-stroke, single cylinder, OHV |
| Displacement / Capacity | 249 cc / 15.2 cu in |
| Bore X Stroke | — |
| Compression Ratio | — |
| Cooling System | — |
| Max Power | — |
| Max Torque | — |
| Ignition | Magneto |
| Induction | Amal carburettor, side float |
| Start System | Slip-on kick starter |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump |
| Gear Box | 4-speed, hand or foot gearshift |
| Clutch | — |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Girder, spring loaded fork |
| Rear Suspension | None, spring loaded saddle |
| Front Brakes | — |
| Rear Brakes | — |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.75 x 19 |
| Rear Tyre | 3.00 x 19 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
A one-year, better-equipped version of BSA's 250 single, with a separate oil tank, four-speed gearbox with a choice of hand or foot change, steering damper and adjustable bars. It is often regarded as one of the best-looking pre-war BSAs and was dropped when the range was redesigned for 1937.
