Kawasaki GPz900R Ninja (1989-90)

The Kawasaki GPz900R Ninja was a motorcycle model that was released in 1989-1990. It had a liquid-cooled, transverse four-cylinder engine with four valves per cylinder and a capacity of 908cc. The bike had an iron double-cradle frame and a six-speed transmission. It was equipped with 41mm telescopic forks and a Uni-Trak air-assisted, single shock rear suspension. The brakes were 2x 300mm discs with four-piston calipers at the front and a single 250mm disc with a two-piston caliper at the back. The front tyre was a 120/70-17, while the rear tyre was a 150/70-18, and the bike had a trail of 91mm and a wheelbase of 1425mm. The bike weighed 228kg dry and had a fuel capacity of 22 litres, with an average consumption of 40.8mpg. The Kawasaki GPz900R Ninja could travel a standing quarter-mile in 11.3 seconds and had a top speed of 247.8 km/h or 154 mph.

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Technical specifications:

Make Model: Kawasaki GPz 900 Ninja / ZX900R Ninja

Year: 1989 – 90

Engine: Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.

Capacity: 908 cc / 55.4 cu-in

Bore x Stroke: 72.5 x 55 mm

Cooling System: Liquid cooled

Compression Ratio: 11.0:1

Induction: 4x 34mm Keihin CVK34 carburettors

Ignition: Battery ignition, full electronic!

Starting: Electric

Max Power: 108 hp / 80.5 kW @ 9500 rpm

Max Torque: 8.7 kgf-m / 62.9 lb-ft @ 8500 rpm

Transmission: 6 Speed

Final Drive: Chain

Frame: Iron, Double cradle frame

Front Suspension: 41mm Telescopic forks, air assisted four way anti dive.

Rear Suspension: Uni-Trak air assisted, single shock, 4-way adjustable damping.

Front Brakes: 2x 300mm discs 4 piston calipers

Rear Brakes: Single 250mm disc 2 piston caliper

Front Tyre: 120/70-17

Rear Tyre: 150/70-18

Trail: 91 mm / 3.5 in

Wheelbase: 1425 mm / 56.1 in

Seat Height: 790 mm / 31.1 in

Dry Weight: 228 kg / 502 lbs

Fuel Capacity: 22 Litres / 5.8 US gal

Consumption Average: 40.8 mpg

Standing 1/4 Mile: 11.3 sec

Top Speed: 247.8 km/h / 154 mph