What category is the 1990 Kawasaki GPZ 900 R (reduced Effect)?

The 1990 Kawasaki GPZ 900 R (reduced Effect) has a Category of Sport.

What is the engine size of the 1990 Kawasaki GPZ 900 R (reduced Effect)?

The 1990 Kawasaki GPZ 900 R (reduced Effect) has a Capacity: of 908.00 ccm (55.41 cubic inches).

What type of engine does the 1990 Kawasaki GPZ 900 R (reduced Effect) have?

The 1990 Kawasaki GPZ 900 R (reduced Effect) has a Engine type of In-line four.

What is the engine power of the 1990 Kawasaki GPZ 900 R (reduced Effect)?

The 1990 Kawasaki GPZ 900 R (reduced Effect) has a Power of 100.00.

Is the 1990 Kawasaki GPZ 900 R (reduced Effect) air cooled or liquid cooled?

The 1990 Kawasaki GPZ 900 R (reduced Effect) has a Cooling system of Liquid.

How many gears does the 1990 Kawasaki GPZ 900 R (reduced Effect) have?

The 1990 Kawasaki GPZ 900 R (reduced Effect) has a Gearbox of 6-speed.

How much does the 1990 Kawasaki GPZ 900 R (reduced Effect) weigh?

The 1990 Kawasaki GPZ 900 R (reduced Effect) has a Weight incl. oil, gas, etc of 257.0 kg (566.6 pounds).

What is the top speed of the 1990 Kawasaki GPZ 900 R (reduced Effect)?

The 1990 Kawasaki GPZ 900 R (reduced Effect) has a Top speed of 240.0 km/h (149.1 mph).

Kawasaki GPZ 900 R (reduced Effect) - 1990 Specifications and Reviews

Name: 1990 Kawasaki GPZ 900 R (reduced Effect)
Brand: Kawasaki

The 1990 Kawasaki GPZ 900 R reduced effect is a middleweight sport bike that delivers accessible performance for riders seeking thrilling yet manageable power. Its 908cc in-line four engine produces 100 horsepower, offering spirited acceleration and nimble handling at 257kg. Best known as an approachable alternative to full-bore superbikes, it suits enthusiasts wanting sport bike excitement without overwhelming aggression.

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1990

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General information
Category	Sport
Year	1990
Model	Kawasaki GPZ 900 R (reduced effect)

Engine and Transmission Specifications
Transmission typefinal drive	Chain
Gearbox	6-speed
Cooling system	Liquid
Fuel control	DOHC
Valves per cylinder	4
Bore x stroke	72.5 x 55.0 mm (2.9 x 2.2 inches)
Compression	11.0:1
Power	100.00
Stroke	4
Engine type	In-line four
Capacity:	908.00 ccm (55.41 cubic inches)

Physical measures and capacities
Weight incl. oil, gas, etc	257.0 kg (566.6 pounds)
Kawasaki GPZ 900 R (reduced Effect) dimensions and frame
Rear brakes	Single disc
Front brakes	Dual disc
Rear tyre dimensions	150/70-18
Front tyre dimensions	120/70-17
Speed and acceleration
Top speed	240.0 km/h (149.1 mph)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	22.00 litres (5.81 gallons)

Performance Profile & Rider Fit

100 hp

Peak Power

3.6s

0-60 mph

149.1 mph

Top Speed

Best For

Track55%

City55%

Cornering65%

Daily Riding65%

Touring78%

Passenger70%

Rider Profile

Best For	Best suited to riders with at least a couple of years of experience who are comfortable managing a torquey, liquid-cooled four with real weight and a restricted (de-tuned) but still meaningful power output.
Purpose	Designed as a sport tourer, it aims to blend confident highway speed and stability with enough comfort for longer rides rather than outright track performance.
Rider Fit	At 257 kg with a fairly long wheelbase and a reach to the bars typical of early-90s sport tourers, it suits riders of average-to-tall height and reasonable strength for low-speed maneuvering.
Character	A smooth, torque-rich in-line four wrapped in a stable chassis gives this bike a composed, confidence-inspiring, all-round character rather than a sharp or aggressive one.
Not Ideal For	Not ideal for new riders seeking a light, nimble first bike or for anyone wanting a dedicated off-road or track-focused machine.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.