| MODEL | BSA A7 SHOOTING STAR 1957 |
| Year | 1957 |
| Engine Type | Twin, four-stroke |
| Displacement / Capacity | 497 cc / 30.33 cu in |
| Bore X Stroke | 66.0 mm x 72.6 mm |
| Compression Ratio | 6.6:1 |
| Cooling System | Air |
| Max Power | 14.4 kW / 19.7 hp @ 6000 rpm |
| Max Torque | — |
| Ignition | Lucas magneto |
| Induction | — |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | — |
| Clutch | Wet multiplate |
| Final Drive | — |
| CHASSIS SPECS | |
| Frame | Single cradle |
| Front Suspension | Hydraulic telescopic forks |
| Rear Suspension | Twin shock |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | 2180 mm / 85.8 in |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1391 mm / 54.8 in |
| Ground Clearance | — |
| Dry Weight | 193 kg / 425.5 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.25-19 |
| Rear Tyre | 3.25-19 |
| FUEL SYSTEM | |
| Fuel Capacity | 19.0 Litres / 5.02 US gal |
| Fuel Consumption | — |
| Top Speed | 168 km/h / 104.4 mph |
The 500 vertical twin Shooting Star as listed for 1957, with a swinging-arm frame, Lucas magneto and kick start.
