Kawasaki KZ400: history, specs, pictures

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The Kawasaki KZ400 is 398cc twin cylinder UJM Universal Japanese Motorcycle. This term is blurred today with the various models Japan builds. Few of which look like the UJM of the 1970s and 1980s. Kawasaki produced the KZ400 from 1974-1984. Some of the later models were 440cc. They were built at plants in Akasi, Japan and Lincoln, Nebraska. The Lincoln plant (1974) made Kawasaki the first the first foreign vehicle manufacturer to operate a plant in the United States. KZ400s outsold Honda in the 400cc twins market through the 1970s. These motorcycle were marketed as fuel efficient transportation. Ads would feature the KZ400 next to a Volkswagen Beetle and the tagline "think smaller."

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Kawasaki KZ400
Also called KZ400H LTD, KZ 400 H LTD, KZ400 LTD, KZ 400 LTD, KZ 400
Production 1979
Class Road
twin, four-stroke
Bore / Stroke 64.0mm x 62.0mm
Top Speed 93 mph
Horsepower 35.27 HP (26.3 KW) @ 8500RPM
Torque 2.36 ft/lbs (3.2 Nm) @ 7000RPM
Fuel System carburetor. keihin vb32ss x2
Ignition battery and coil
Spark Plug NGK B8ES
Battery YUASA 12N12A-4A-1
Transmission Gear box: 6-speed

Final Drive: chain

Clutch: wet multi disk
Final Drive Chain: 530x104
Front Sprocket 15T
Rear Sprocket 45T
Brakes Front: single disc
Rear: expanding brake (drum brake)
Front Tire 3.25x18
Rear Tire 3.50x18
Wheelbase 54.72 inches (1390 mm)
Length 81.89 inches (2080 mm)
Width 31.89 inches (810 mm)
Height 46.46 inches (1180 mm)
Weight 374.79 pounds (170.0 Kg) (dry),
Oil Capacity 0.77 Gallon (2.90 Liters)
Recommended Oil K-tech 10W-40
Fuel Capacity 3.17 Gallon (12.00 Liters)
Fuel Consumption 3.85 liters/100 km (26.0 km/l or 61.10 mpg)
Manuals Service Manual

The Kawasaki KZ400 LTD was a twin, four-stroke Road motorcycle produced by Kawasaki in 1979. Max torque was 2.36 ft/lbs (3.2 Nm) @ 7000 RPM. Claimed horsepower was 35.27 HP (26.3 KW) @ 8500 RPM.


The engine was a air cooled twin, four-stroke. A 64.0mm bore x 62.0mm stroke result in a displacement of just 398.0 cubic centimeters. Fuel was supplied via a single overhead cams (sohc).


The bike has a 6-speed transmission. Power was moderated via the wet multi disk.


Stopping was achieved via single disc in the front and a expanding brake (drum brake) in the rear. The KZ400 LTD was fitted with a 3.17 Gallon (12.00 Liters) fuel tank. The bike weighed just 374.79 pounds (170.0 Kg). The wheelbase was 54.72 inches (1390 mm) long.

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