The Kawasaki GPz 400R or ZX 400 was a motorcycle produced in 1985. It had a liquid-cooled, four-stroke, transverse four-cylinder engine with a capacity of 399cc and a compression ratio of 11.5:1. The induction system included 4 Keihin CVKD30 carburetors and an ignition system with CDI. The bike had an electric starter and could produce a maximum power of 59 hp at 12000 rpm and torque of 3.6 kgf-m at 10500 rpm. The clutch was a wet multi-disc type, and the transmission had six gears with a final drive by chain. The aluminum diamond tubular, double-cradle frame was used with a rising rate monoshock for the rear suspension and telescopic forks at the front. The braking system included a dual-disc system at the front and a single disc with a piston caliper at the rear. The GPz 400R had a wheelbase of 1395 mm, a dry weight of 176 kg, and a fuel tank capacity of 16 litres. The front tire was 100/90-16, and the rear was 130/90-16. The rake was set at 24 degrees, and the trail at 87mm or 3.4 inches. The seat height was 770 mm or 30.3 inches. Overall, the Kawasaki GPz 400R was a high-performance bike with remarkable handling, acceleration, and braking, making it a popular racing and touring motorcycle.
Technical specifications:
Make Model: Kawasaki GPz 400R / ZX 400
| Year | 1985 |
|---|---|
| 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 |
