Kawasaki GPZ400R (1986)

The Kawasaki GPz 400R, also known as the ZX 400, is a motorcycle model created in 1986 by Kawasaki. The bike runs on a four-stroke, transverse four-cylinder, DOHC engine with 4 valves per cylinder, with a 399cc capacity and bore x stroke of 57 39 mm. It is a liquid-cooled engine with a compression ratio of 11.5:1 and is powered by 4 Keihin CVKD30 carburetors. The ignition is CDI and the starting method is electric. The maximum power achieved is 59 hp / 44 kW @ 12000 rpm, with a maximum torque of 3.6 kgf-m / 26.0 lb-ft @ 10500 rpm. The clutch is a wet multi-disc, and the transmission has 6 speeds with a final drive of Chain Gear Ratio. The motorcycle’s frame is made of aluminum diamond tubular, double cradle, with a front suspension of 41mm telescopic forks, and the rear suspension is a rising rate monoshock. The front brakes consist of 2x 300mm discs with 4 piston calipers, while the rear brake is a single 240mm disc with 1 piston caliper. The front and rear tires are 100/90-16 and 130/90-16, respectively, and the bike has a rake of 24 degrees and a trail of 87mm / 3.4 in. The wheelbase is 1395 mm / 54.9 in and the seat height is 770 mm / 30.3 in. The dry weight of the motorcycle is 176 kg / 388 lbs, and the fuel capacity is 16 Litres / 4.2 US gal.

Technical specifications:

Make Model: Kawasaki GPz 400R / ZX 400

Year: 1986
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