The 1987 Kawasaki GPz 400R or ZX 400 is a four-stroke, transverse four-cylinder, DOHC motorbike with four valves per cylinder. It has a 399cc engine with a bore x stroke of 57 39mm and a cooling system that is liquid-cooled. The compression ratio of the bike is 11.5:1, and it is powered by 4x Keihin CVKD30 carburetors with CDI ignition. The bike has an electric starting system and can produce a maximum power of 59hp at 12,000rpm and a maximum torque of 3.6kgf-m at 10,500rpm. It also comes with a wet multi-disc clutch and a six-speed transmission with a final chain drive.
This bike has an aluminum diamond tubular, double cradle frame, and a front suspension with 41mm telescopic forks and a rear suspension with a rising rate monoshock. The front brakes consist of 2x 300mm discs and four-piston calipers, while the rear brakes feature a single 240mm disc and a single-piston caliper. The front and rear tyres have dimensions of 100/90-16 and 130/90-16, respectively. The GPz 400R has a rake angle of 24 degrees, a trail of 87mm/3.4 inches, a wheelbase of 1395mm/54.9 inches, and a seat height of 770mm/30.3 inches. The dry weight of the motorbike is 176kg/388 pounds, and the fuel capacity is 16 litres/4.2 US gallons.
Technical specifications:
Make Model: Kawasaki GPz 400R / ZX 400
| Year | 1987 |
|---|---|
| Engine | Four stroke, transverse four cylinder, DOHC, 4 Valve per cylinder. |
| Capacity | 399 cc / 24.3 cu-in |
| Bore x Stroke | 57 39 mm |
| Cooling System | Liquid cooled |
| Compression Ratio | 11.5:1 |
| Induction | 4x Keihin CVKD30 carburetors |
| Ignition | CDI |
| Starting | Electric |
| Max Power | 59 hp / 44 kW @ 12000 rpm |
| Max Torque | 3.6 kgf-m / 26.0 lb-ft @ 10500 rpm |
| Clutch | Wet multi disc |
| Transmission | 6 Speed |
| Final Drive | Chain |
| Gear Ratio | 1st 2,571 2nd 1,777 3rd 1,38 4th 1,125 5th 0,961 6th 0,851 |
| Frame | Aluminum diamond tubular, double cradle |
| Secondary Reduction Ratio | 2.933 (44/15) |
| Total Reduction Ratio | (6-speed) 7.154 |
| Front Suspension | 41mm Telescopic forks |
| Rear Suspension | Rising rate monoshock |
| Front Brakes | 2x 300mm discs 4 piston calipers |
| Rear Brakes | Single 240mm disc 1 piston caliper |
| Front Tyre | 100/90-16 |
| Rear Tyre | 130/90-16 |
| Rake | 24 degrees |
| Trail | 87mm / 3.4 in |
| Wheelbase | 1395 mm / 54.9 in |
| Seat Height | 770 mm / 30.3 in |
| Dry Weight | 176 kg / 388 lbs |
| Fuel Capacity | 16 Litres / 4.2 US gal |
