| MODEL | KAWASAKI Z 400FX 1980 - 1982 |
| Year | 1980 - 1982 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder |
| Displacement / Capacity | 399 cc / 24.3 cu in |
| Bore X Stroke | 52 x 47 mm |
| Compression Ratio | 9.5:1 |
| Cooling System | Air cooled |
| Max Power | 43 hp / 32 kW @ 10500 rpm |
| Max Torque | 3.5 kgf-m / 25.3 lb-ft @ 8500 rpm |
| Ignition | Battery & coil |
| Induction | 4 x 21 mm Teikei (TKK 21P) carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swinging arm fork with shock absorbers |
| Front Brakes | Single 236 mm disc |
| Rear Brakes | Single 140 mm drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1380 mm / 54.3 in |
| Ground Clearance | 145 mm / 5.7 in |
| Dry Weight | 189 kg / 416.6 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.25-19 |
| Rear Tyre | 3.75-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 15 Litres / 3.9 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The later-run Z400FX, a 400 cc transverse four with DOHC and four Teikei carburettors, carried on as the sportier alternative to the Z400 twin. Its chassis matches the 1978-79 FX, with telescopic forks, a swinging-arm rear and a single front disc. Its figures are unchanged from the earlier FX in the source.
