Jawa 350/639 - 1991 Specifications and Reviews

The 1991 Jawa 350/639 is a lightweight naked bike ideal for novice riders and commuters seeking affordable, reliable transportation. Its air-cooled twin-cylinder engine delivers modest performance with strong low-end torque, while the simple carbureted design and robust construction make it known for dependability and easy maintenance in diverse riding conditions.

1991
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General information

CategoryNaked bike
Year1991
ModelJawa 350/639

Engine and Transmission Specifications

Transmission typefinal driveChain
Cooling systemAir
Lubrication systemmix
Fuel systemCarburettor
Bore x stroke58.0 x 65.0 mm (2.3 x 2.6 inches)
Torque32.00
Stroke2
Engine typeTwin
Capacity:344.00 ccm (20.99 cubic inches)

Physical measures and capacities

Exhaust systemDouble stainless steel pipes
Rear brakesExpanding brake (drum brake)
Front brakesSingle disc
 
 

Speed and acceleration

Top speed130.0 km/h (80.8 mph)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsred, black, white
Fuel consumption pr. 10 km (6.2 miles)4.00 litres (1.06 gallons)
Reserve fuel capacity2.00 litres (0.53 gallons)
Fuel capacity17.00 litres (4.49 gallons)

Performance Profile & Rider Fit

80.8 mph
Top Speed

Best For

Track10%
City55%
Cornering35%
Daily Riding45%
Touring30%
Passenger30%

Rider Profile

Best ForThis simple two-stroke twin is a forgiving machine well suited to beginners and riders who enjoy classic, low-stress motorcycling.
PurposeIt works best as a light commuter or leisurely weekend runabout rather than a performance or adventure machine.
Rider FitIts modest size and weight class make it easy to handle for riders of most statures and strength levels.
CharacterIt has the charming, unhurried personality of an old-school air-cooled two-stroke, with a distinctive exhaust note and mechanical simplicity.
Not Ideal ForIt is not suited for riders seeking high speed, long-distance touring comfort, or off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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