The Jawa 420 Prototype motorcycle, produced in 1982, has a four-stroke, single-cylinder engine with a capacity of 420cc and a bore x stroke of 85 x 73 mm. It has a liquid-cooled system and a 5-speed transmission with chain final drive. The front suspension consists of hydraulic telescopic forks with a front wheel travel of 154mm and the rear suspension is a single shock with 150mm of rear wheel travel. The front brake is a single disc, while the rear brake is an expanding drum. It weighs 155 kg, has a fuel capacity of 20 L or 5.2 US gallons, and has a top speed of around 130 km/h or 80 mph.
Technical specifications:
Make Model: Jawa 420 Prototype
| Year | 1982 |
|---|---|
| Engine | Four stroke, single cylinder, SOHC, 4 valves per cylinder. |
| Capacity | 420 cc / 25.6 cu in |
| Bore x Stroke | 85 x 73 mm |
| Cooling System | Liquid cooled |
| Transmission | 5 Speed |
| Final Drive | Chain |
| Front Suspension | Hydraulic telescopic forks |
| Front Wheel Travel | 154 mm / 6.1″ |
| Rear Suspension | Single shock |
| Rear Wheel travel | 150 mm / 5.9″ |
| Front Brakes | Single disc |
| Rear Brakes | Expanding drum |
| Dry Weight | 155 kg / 342 bls |
| Fuel Capacity | 20 L / 5.2 US gal |
