The ultimate evolution of the 400 S3. It still loses 4 HP, but gets an electronic ignition
and an engine now rubber mounted. It will be the last
3 cylinders 2 stroke in the Kawasaki range. The KH 400 has been stopped the production in 1980.
| Engine type : | 2-stroke, in line 3-cylinder, piston reed valve, air-cooled |
| Capacity : | 400.4 cm3 |
| Bore x Stroke : | 56.9 x 52.3 mm |
| Max power/rpm : | 38 HP at 7000 rpm |
| Max torque : | 3.9 m.kg at 6500 rpm |
| Compression ratio : | 6.5 : 1 |
| Fuel system : | 3 Mikuni carburettors - Type : VM 26 SC |
| Ignition : | CDI - 12 V |
| Gear box : | 5 speed |
| Tyres : | Front : 3.25 X 18" – Rear : 3.50 X 18" |
| Weight (empty) : | 165 kg |
| Max speed : | 163 km/h |
