| MODEL | KAWASAKI GPZ 400S 1986 - 1987 |
| Year | 1986 - 1987 |
| Engine Type | Four-stroke parallel twin, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 399 cc / 24.3 cu in |
| Bore X Stroke | 70 x 51 mm |
| Compression Ratio | 10.7:1 |
| Cooling System | Liquid cooled |
| Max Power | 50 hp / 36.5 kW @ 10500 rpm |
| Max Torque | 3.6 kgf-m / 26 lb-ft @ 9000 rpm |
| Ignition | CDI |
| Induction | 4x Keihin CVM30 carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 speed |
| Clutch | Wet multi-disc |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Tubular double cradle, aluminium |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swinging arm |
| Front Brakes | Single disc |
| Rear Brakes | Single drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 770 mm / 30.3 in |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 169 kg / 372.5 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 100/90-16 |
| Rear Tyre | 120/90-16 |
| FUEL SYSTEM | |
| Fuel Capacity | 15 Litres / 3.9 US gal |
| Fuel Consumption | — |
| Top Speed | — |
A 400 cc parallel-twin member of Kawasaki's GPz family, with a 70 x 51 mm bore and stroke and about 50 hp at 10,500 rpm. It has a single front disc, a rear drum brake, 16-inch wheels and a 15-litre tank, and it is a different engine layout from the transverse four of the GPz 400R.
