Kawasaki GPZ 900R Ninja

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Kawasaki-gpz-900r-ninja-1984-1986-0.jpg
Kawasaki GPZ 900R Ninja
Manufacturer
Production 1984 - 1987
Class Sport touring
Engine
Liquid cooled, four stroke, transverse four cylinder, DOHC, 4 valves per cylinder
Bore / Stroke 71.9mm x 71.9mm
Compression ratio 11.0:1
Horsepower 107.95 HP (80.5 KW) @ 9500RPM
Torque 62.7 ft/lbs (85.0 Nm) @ 8500RPM
Fuel System 4x34mm Keihin CVK34 Carburetors
Transmission Gear box: 6-Speed

Final Drive: Chain

Clutch: Wet multi-discs
Suspension Front: 39mm telehydraulic forks air assisted and variable damping
Rear: Rising Rate adjustable preload 4-way damping 115mm wheel travel
Brakes Front: Double disc 280 mm, 1 piston calipers
Rear: Single disc 270 mm, 1 piston caliper
Front Tire 120/80 V16
Rear Tire 130/80 V18
Wheelbase 58.9 inches (1496 mm)
Weight 228.0 kg (wet)
Recommended Oil K-tech 10W-40
Manuals Service Manual


The Kawasaki GPZ 900R Ninja was a Liquid cooled, four stroke, transverse four cylinder, DOHC, 4 valves per cylinder Sport touring motorcycle produced by Kawasaki between 1984 and 1987. Max torque was 62.7 ft/lbs (85.0 Nm) @ 8500 RPM. Claimed horsepower was 107.95 HP (80.5 KW) @ 9500 RPM.

Engine[edit | edit source]

A 71.9mm bore x 71.9mm stroke result in a displacement of just 908.0 cubic centimeters.

Drive[edit | edit source]

The bike has a 6-Speed transmission. Power was moderated via the Wet multi-discs.

Chassis[edit | edit source]

It came with a 120/80 V16 front tire and a 130/80 V18 rear tire. Stopping was achieved via Double disc 280 mm, 1 piston calipers in the front and a Single disc 270 mm, 1 piston caliper in the rear. The front suspension was a 39mm telehydraulic forks air assisted and variable damping while the rear was equipped with a Rising Rate adjustable preload 4-way damping 115mm wheel travel. The wheelbase was 58.9 inches (1496 mm) long.

1984 - 1986 Kawasaki GPZ 900R Ninja[edit | edit source]

1984 - 1986 Kawasaki GPZ 900R Ninja

Kawasaki introduced the GPZ 900R to the public at the 1983 Paris Motorshow. Eleven years after the introduction of the Z1, Kawasaki's 900cc bike again claimed the title of "world's fastest", recording a top speed of 240km/h and a 0-400m acceleration time of 10.976 seconds. In January 1984, the GPZ 900R had the word "Ninja" added as a prefix to its name for the North American market.


1987 - 1992 Kawasaki GPZ 900R Ninja[edit | edit source]

1987 - 1992 Kawasaki GPZ 900R Ninja

In 1987, the new GPz 900R Ninja was the cutting edge of performance, with an all-new liquid-cooled four-cylinder driving its cams from the left side instead of the middle—the better to lean over farther in corners and produce top-end power that put the big air-cooled multis of the day to shame.