Naked Motorcycles
1983Kawasaki Z 400 J
19 fields on record
The 1983 Kawasaki Z 400 J is a lightweight naked bike ideal for new riders and commuters. Its compact 399cc four-cylinder engine delivers reliable performance with a manageable 27 horsepower, while the air-cooled design ensures simplicity and affordability. Known for excellent fuel efficiency and nimble handling, it remains a practical middleweight choice for everyday riding.
- Capacity
- 399.0 ccm
- Engine
- In-line four, four-stroke
- Gearbox
- 6-speed
- Wet weight
- 210.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 27.0 HP (19.9 kW) @ 8000 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It was built as an accessible small-displacement naked bike for everyday commuting and learning classic four-cylinder character rather than outright performance.
- Built for
- The air-cooled inline-four DOHC engine gives a smooth, characterful buzz and classic retro appeal rather than raw speed.
- Not ideal for
- It is not the right choice for riders seeking serious highway touring range, passenger comfort, or off-road capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 399.0 ccm
- Power
- 27.0 HP (19.9 kW) @ 8000 RPM
- Engine type
- In-line four, four-stroke
- Power/weight ratio
- 0.1286 HP/kg (wet)
- Bore x stroke
- 52.0 x 47.0 mm
- Compression
- 9.5:1
- Cooling system
- Air
- Valves per cylinder
- 2
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 154.0 km/h (95.7 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Dual disc
- Rear brakes
- Expanding brake
- Front tyre
- 3.25-19
- Rear tyre
- 3.75-18
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 1980 | 1981 | 1982 | 1983 |
|---|---|---|---|---|
| Capacity | 399 cc | 399 cc | 399 cc | 399 cc |
| Fuel capacity | 16.5 L | 16.5 L | 16.5 L | 16.5 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Kawasaki Z 400 J?
The 1983 Kawasaki Z 400 J has a Capacity of 399.0 ccm (24.35 cubic inches).
What engine power does the Kawasaki Z 400 J have?
The 1983 Kawasaki Z 400 J has a Power of 27.0 HP (19.9 kW) @ 8000 RPM.
How many gears does the Kawasaki Z 400 J have?
The 1983 Kawasaki Z 400 J has a Gearbox of 6-speed.
How much does the Kawasaki Z 400 J weigh?
The 1983 Kawasaki Z 400 J has a Wet weight of 210.0 kg (463.0 pounds).
Shop this bike
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The 1983 Kawasaki Z 400 J is a classic motorcycle that offers a smooth and powerful ride. With its 398cc engine, it delivers a thrilling performance that will satisfy any rider. The sleek design and comfortable seating make it a joy to ride both in the city and on the open road. The handling is responsive, and the overall build quality is top-notch. Whether you're a seasoned rider or a beginner, the Z 400 J is a reliable and fun choice for your next motorcycle.
If you're in the market for a vintage motorcycle, the 1983 Kawasaki Z 400 J is a great option to consider. Its timeless design and impressive performance make it a standout choice for riders of all levels. The smooth handling and powerful engine make for an enjoyable riding experience, while the comfortable seating allows for long and relaxing rides. Overall, the Z 400 J is a solid and dependable motorcycle that is sure to turn heads wherever you go.
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