| MODEL | BSA A65 RACING 650 SIDECAR 1965 - 1966 |
| Year | 1965 - 1966 |
| Engine Type | Four stroke, parallel twin cylinder, OHV |
| Displacement / Capacity | 654 cc / 39.9 cu in |
| Bore X Stroke | 75 x 74 mm |
| Compression Ratio | 9.0:1 |
| Cooling System | — |
| Max Power | — |
| Max Torque | — |
| Ignition | Twin coil |
| Induction | Amal Monobloc 389/67 |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 4 speed |
| Clutch | Multi-plate with built-in cush drive |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel tubing, cradle, adjusted for sidecar |
| Front Suspension | Telescopic forks with coil spring, hydraulically damped |
| Rear Suspension | Coil spring, hydraulically damped |
| 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 | — |
| Rear Tyre | — |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
This was a sidecar-racing specification of the A65 650 twin, using the Lightning-type engine and a cradle frame modified to carry a chair. Few mechanical details are published beyond the engine and chassis basics.
