| MODEL | KAWASAKI KDX 400 1979 |
| Year | 1979 |
| Engine Type | Two stroke, single cylinder |
| Displacement / Capacity | 392 cc / 23.9 cu-in |
| Bore X Stroke | 80 x 78 mm |
| Compression Ratio | 6.8:1 |
| Cooling System | Air cooled |
| Max Power | 39 hp / 29 kW @ 7000 rpm |
| Max Torque | 42.2 Nm / 31.1 ft-lb @ 6000 rpm |
| Ignition | CDI |
| Induction | 36mm Mikuni carburetor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Adjustable air forks, 259 mm / 10.2 in travel |
| Rear Suspension | Dual shock, 230 mm / 9.1 in travel |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1450 mm / 57.1 in |
| Ground Clearance | — |
| Dry Weight | 109 kg / 240 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.50 -21 |
| Rear Tyre | 5.00 -18 |
| FUEL SYSTEM | |
| Fuel Capacity | 12 Litres / 3.2 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 1979 KDX 400 is a 392 cc air-cooled two-stroke off-road single with adjustable air forks, dual rear shocks and drum brakes front and rear. It sat in the KDX range between the smaller 250 and the later 450, and the page carries no model narrative beyond a request for corrections.
