| MODEL | BROUGH SUPERIOR BS4 AUSTIN FOUR 1932 - 1934 |
| Year | 1932 - 1934 |
| Engine Type | Four-cylinder side-valve, Austin 7 based, light alloy sports head |
| Displacement / Capacity | 797 cc / 48.6 cu in |
| Bore X Stroke | — |
| Compression Ratio | — |
| Cooling System | Water-cooled, two radiators either side of front downtube |
| Max Power | — |
| Max Torque | — |
| Ignition | — |
| Induction | — |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | Austin 7 three-speed with reverse |
| Clutch | — |
| Final Drive | Shaft to crown wheel and pinion driving a pair of close-coupled rear wheels |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | — |
| Rear Suspension | — |
| Front Brakes | — |
| Rear Brakes | — |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1510 mm / 59.5 in |
| Ground Clearance | — |
| Dry Weight | 230 kg / 510 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
The BS4 used a bored-out Austin 7 engine and gearbox in a Brough Superior chassis with two closely spaced rear wheels on a central final drive. It was aimed at sidecar and utility use, and only about ten were built.
