| MODEL | KAWASAKI ZX-R 400 1990 |
| Year | 1990 |
| Engine Type | Four stroke, liquid cooled, DOHC, transverse four cylinder, 4 valves per cylinder |
| Displacement / Capacity | 399 cc / 24.3 cu in |
| Bore X Stroke | 57 x 39 mm |
| Compression Ratio | 12.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 59 hp / 44 kW @ 12000 rpm |
| Max Torque | 40 Nm / 29.5 lb-ft @ 10000 rpm |
| Ignition | Transistorized |
| Induction | 4 x Keihin CVKD30 carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6-speed |
| Clutch | Wet multi-disc |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Aluminium diamond tubular, double cradle |
| Front Suspension | 41 mm upside-down Showa forks, adjustable preload and rebound damping |
| Rear Suspension | Uni-Trak, adjustable preload and rebound damping |
| Front Brakes | 2 x 300 mm discs, 4-piston calipers |
| Rear Brakes | Single 240 mm disc, 2-piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 765 mm / 30.1 in |
| Wheelbase | 1395 mm / 54.9 in |
| Ground Clearance | — |
| Dry Weight | 160 kg / 352.7 lb |
| Wet Weight | 177 kg / 390 lb |
| WHEEL SPECS | |
| Front Tyre | 120/60-17 |
| Rear Tyre | 160/60-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 16 litres / 4.2 US gal |
| Fuel Consumption | 18.7 km/l |
| Top Speed | 215.1 km/h / 133.5 mph |
The 1990 ZX-R 400 is a 399 cc supersport bike with a DOHC transverse four and four Keihin carburettors, and it adds adjustable upside-down Showa forks and a Uni-Trak rear. It runs 17-inch wheels with a 120/60 front tyre and a 160/60 rear. The page treats it as a road-test subject, with a 215 km/h top speed and 18.7 km/l average fuel consumption.
