| MODEL | HERCULES K 103 1964 |
| Year | 1964 |
| Engine Type | Single cylinder, two-stroke |
| Displacement / Capacity | 97 cc / 5.9 cu in |
| Bore X Stroke | 48 x 54 mm / 1.9 x 2.1 in |
| Compression Ratio | — |
| Cooling System | Air |
| Max Power | 5.1 kW / 7 hp @ 5750 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | Carburettor, Bing 22 mm |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | — |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single cradle |
| Front Suspension | — |
| Rear Suspension | Swingarm |
| Front Brakes | Drum brake (expanding) |
| Rear Brakes | Drum brake (expanding) |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3-16 |
| Rear Tyre | 3-16 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
The K 103 is a small 97 cc air-cooled two-stroke Hercules lightweight with a single-cradle frame, swingarm rear suspension and 16-inch spoked wheels. It makes about 7 hp and is a basic commuter-class machine.
