| General information | 
  
    | Model name | Kawasaki Z 400 J | 
    | Model year | 1981 | 
    | Category | Naked bike | 
    | Rating | 3.3   See the detailed rating of engine performance, design and look, accident risk, etc. Compare with any other motorcycle. | 
    
        | Engine and transmission | 
  
    | Displacement | 399.0 ccm (24.35 cubic inches) | 
    | Engine type | In-line four, four-stroke | 
    | Power output | 27.0 HP (19.7  kW)) @ 8000 RPM | 
    | Top speed | 154.0 km/h (95.7 mph) | 
    | Compression | 9.5:1 | 
    | Bore x stroke | 52.0 x 47.0 mm (2.0 x 1.9 inches) | 
    | Valves per cylinder | 2 | 
    | Fuel control | Double Overhead Cams/Twin Cam (DOHC) | 
    | Cooling system | Air | 
    | Gearbox | 6-speed | 
    | Transmission type | Chain  (final drive) | 
    
        | Chassis, suspension, brakes and wheels | 
  
    | Front tire | 3.25-19 | 
    | Rear tire | 3.75-18 | 
    | Front brakes | Dual disc | 
    | Rear brakes | Expanding brake | 
    
        | Physical measures and capacities | 
  
    | Weight incl. oil, gas, etc | 210.0 kg (463.0 pounds) | 
    | Fuel capacity | 16.50 litres (4.36 US gallons) | 
    
        | Other specifications | 
  | Update specs | Report missing specs or required updates. | 
    
        | Further information | 
  | Insurance costs | Compare US insurance quotes from the nation's top providers. | 
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. | 
| Ask questions | Join the 81 Kawasaki Z 400 J discussion group or the general Kawasaki discussion group. | 
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