Jawa 420 Prototype (2011-15)

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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

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