Jawa 638: history, specs, pictures

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Jawa 638
Manufacturer
Production 1994
Engine
twin, two-stroke
Horsepower 25.48 HP (19.0 KW) @ 5500RPM
Torque 23.16 ft/lbs (31.4 Nm) @ 4750RPM
Transmission Gear box: 4-speed
Brakes Front: expanding brake
Rear: expanding brake
Seat Height 31.5 inches (800 mm)
Weight 341.72 pounds (155.0 Kg) (dry),
Fuel Capacity 4.49 Gallon (17.00 Liters)
Manuals Service Manual


The Jawa 638 was a twin, two-stroke standard produced by Jawa in 1994. Max torque was 23.16 ft/lbs (31.4 Nm) @ 4750 RPM. Claimed horsepower was 25.48 HP (19.0 KW) @ 5500 RPM.

Drive[edit | edit source]

The bike has a 4-speed transmission.

Chassis[edit | edit source]

Stopping was achieved via expanding brake in the front and a expanding brake in the rear. The 638 was fitted with a 4.49 Gallon (17.00 Liters) fuel tank. The bike weighed just 341.72 pounds (155.0 Kg).