| MODEL | KAWASAKI FX 400R 1985 - 1988 |
| Year | 1985 - 1988 |
| Engine Type | Four stroke, transverse four cylinders, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 398 cc / 24.3 cu in |
| Bore X Stroke | 56 x 40.4 mm |
| Compression Ratio | 11.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 59 hp / 43.1 kW @ 12000 rpm |
| Max Torque | 3.6 kgf-m / 26 lb-ft @ 10500 rpm |
| Ignition | — |
| Induction | Carburetors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic forks |
| Rear Suspension | Swinging arm |
| Front Brakes | 2x discs |
| Rear Brakes | Single disc |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 170 kg / 374.8 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 100/90-16 |
| Rear Tyre | 120/90-16 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
The FX 400R was a 398 cc sport-oriented machine from Kawasaki's mid-1980s range, built around a liquid-cooled, DOHC transverse four with carburetors. It had a five-speed gearbox, a chain final drive and 16-inch wheels, which put it in the small-displacement four-cylinder class of its day. Surviving technical information for it is limited, so this description covers only its layout and specifications.
