Jawa 420 Prototype
| Make Model | Jawa 420 Prototype |
| Year | 1982 |
| Engine | Liquid cooled, four stroke, single cylinder, SOHC, 4 valves per cylinder. |
| Capacity | 420 |
| Bore x Stroke | 85 x 73 mm |
| Compression Ratio | |
| Induction | |
| Ignition / Starting | |
| Max Power | |
| Max Torque | |
| Transmission / Drive | 5 Speed / chain |
| Front Suspension | Hydraulic telescopic forks, 154mm wheel travel. |
| Rear Suspension | Single shock. 150mm wheel travel. |
| Front Brakes | |
| Rear Brakes | |
| Front Tyre | |
| Rear Tyre | |
| Dry-Weight | 155 kg |
| Fuel Capacity | 20 Litres |