The Jawa 420 Prototype (2011-15) is a motorbike with a two stroke, twin cylinder engine and a capacity of 343.5 cc. It has a compression ratio of 9.8:1, is air cooled and has automatic pumped lubrication. Its ignition is electronic and it can be started via electric or kick. The Jawa 420 Prototype has a maximum power of 17 kW/23 hp at 5250 rpm and a maximum torque of 32 Nm/3.3 kgf/23.6 lb-ft at 4750 rpm. The transmission is four speed with a final drive of chain. It has a length of 2080 mm/81.9 in and a wheelbase of 1370 mm/53.9 in. The seat height is 820 mm/32 in, and the dry weight is 149 kg/327 lb. Its fuel capacity is 17 L/4.5 US gal, and its reserve capacity is 2.8 L/0.74 US gal. The average consumption is 4.7 L/100 km/21.2 km/l/50 US mpg. The Jawa 420 Prototype has a top speed of 129 km/h/80 mph. It features front hydraulic telescopic forks, rear twin shocks, a single 265 mm disc front brake, and a 160 mm drum rear brake. The front and rear tires are 3.25 -18″ and 3.50 -18″, respectively.
Technical specifications:
Make Model: Jawa 350 Sport
| Year | 2011 – 15 |
|---|---|
| Engine | Two stroke, twin cylinder |
| Capacity | 343.5 cc / 21.0 cu in |
| Bore x Stroke | 58 x 65 mm |
| Compression Ratio | 9.8:1 |
| Cooling System | Air cooled |
| Lubrication | Automatic pumped 2-stroke |
| Ignition | Electronic |
| Starting | Electric and kick |
| Max Power | 17 kW / 23 hp @ 5250 rpm |
| Max Torque | 32 Nm / 3.3 kgf / 23.6 lb-ft @ 4750 rpm |
| Transmission | 4 Speed |
| Final Drive | Chain |
| Front Suspension | Hydraulic telescopic forks |
| Rear Suspension | Twin shocks |
| Front Brakes | Single ~A265 mm disc |
| Rear Brakes | ~A160 mm Drum |
| Front Tyre | 3.25 -18″ |
| Rear Tyre | 3.50 -18″ |
| Dimensions | Length: 2080 mm / 81.9 in |
| Wheelbase | 1370 mm / 53.9 in |
| Seat Height | 820 mm / 32 in |
| Dry Weight | 149 kg / 327 lb |
| Fuel Capacity | 17 L / 4.5 US gal |
| Reserve Capacity | 2.8 L / 0.74 US gal |
| Average consumption | 4.7 L/100 km / 21.2 km/l / 50 US mpg |
| Top Speed | 129 km/h / 80 mph |
