The Kawasaki GPz 400R, also known as the ZX 400, was produced from 1988-89. It features a liquid-cooled four-stroke, transverse four-cylinder, DOHC engine with a capacity of 399cc and a compression ratio of 11.5:1. The induction system is made up of four Keihin CVKD30 carburetors, with CDI being used for ignition. The motorcycle has an electric starter with a maximum power output of 59 hp at 12,000 rpm and max torque of 3.6 kgf-m at 10,500 rpm. The bike also comes with a wet multi-disc clutch and six-speed transmission, with the final drive being a chain gear ratio. Its frame is an aluminum diamond tubular, double cradle with a secondary reduction ratio of 2.933 (44/15) and a total reduction ratio of 7.154 (6-speed). Suspension consists of 41mm telescopic forks in the front and a rising rate monoshock in the rear. The GPz 400R has a front brake system made up of two 300mm discs with four-piston calipers and a single 240mm disc with one piston caliper in the rear. Other features include front and rear tires measuring 100/90-16 and 130/90-16, respectively, with a rake of 24 degrees and 87mm trail. The motorcycle has a wheelbase of 1395mm and a dry weight of 176kg, with a fuel capacity of 16 litres.
Technical specifications:
Make Model: Kawasaki GPz 400R / ZX 400
| Year | 1988 – 89 |
|---|---|
| Engine | Four stroke, transverse four cylinder, DOHC, 4 Valve per cylinder. |
| Capacity | 399 cc / 24.3 cu-in |
| Bore x Stroke | 57 x 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~A 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 |
