What category is the 1990 Kawasaki GPZ 500 S (reduced Effect)?

The 1990 Kawasaki GPZ 500 S (reduced Effect) has a Category of Sport touring.

What is the engine size of the 1990 Kawasaki GPZ 500 S (reduced Effect)?

The 1990 Kawasaki GPZ 500 S (reduced Effect) has a Capacity: of 499.00 ccm (30.45 cubic inches).

What type of engine does the 1990 Kawasaki GPZ 500 S (reduced Effect) have?

The 1990 Kawasaki GPZ 500 S (reduced Effect) has a Engine type of Twin.

What is the engine power of the 1990 Kawasaki GPZ 500 S (reduced Effect)?

The 1990 Kawasaki GPZ 500 S (reduced Effect) has a Power of 50.00.

Is the 1990 Kawasaki GPZ 500 S (reduced Effect) air cooled or liquid cooled?

The 1990 Kawasaki GPZ 500 S (reduced Effect) has a Cooling system of Liquid.

How many gears does the 1990 Kawasaki GPZ 500 S (reduced Effect) have?

The 1990 Kawasaki GPZ 500 S (reduced Effect) has a Gearbox of 6-speed.

How much does the 1990 Kawasaki GPZ 500 S (reduced Effect) weigh?

The 1990 Kawasaki GPZ 500 S (reduced Effect) has a Weight incl. oil, gas, etc of 196.0 kg (432.1 pounds).

What is the top speed of the 1990 Kawasaki GPZ 500 S (reduced Effect)?

The 1990 Kawasaki GPZ 500 S (reduced Effect) has a Top speed of 189.0 km/h (117.4 mph).

Kawasaki GPZ 500 S (reduced Effect) - 1990 Specifications and Reviews

Name: 1990 Kawasaki GPZ 500 S (reduced Effect)
Brand: Kawasaki

The 1990 Kawasaki GPZ 500 S is an accessible sport-tourer designed for novice and budget-conscious riders seeking reliable everyday performance. Its 499cc liquid-cooled twin delivers modest 50 horsepower with excellent fuel efficiency and manageable weight, making it ideal for commuting and light touring. Known for dependable engineering and user-friendly handling, this machine remains a popular entry-level sport bike.

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1990

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General information
Category	Sport touring
Year	1990
Model	Kawasaki GPZ 500 S (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	74.0 x 58.0 mm (2.9 x 2.3 inches)
Compression	10.8:1
Power	50.00
Stroke	4
Engine type	Twin
Capacity:	499.00 ccm (30.45 cubic inches)

Physical measures and capacities
Weight incl. oil, gas, etc	196.0 kg (432.1 pounds)
Kawasaki GPZ 500 S (reduced Effect) dimensions and frame
Rear brakes	Expanding brake
Front brakes	Dual disc
Rear tyre dimensions	120/90-16
Front tyre dimensions	100/90-16

Speed and acceleration
Top speed	189.0 km/h (117.4 mph)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	18.00 litres (4.76 gallons)

Performance Profile & Rider Fit

50 hp

Peak Power

0-60 mph

117.4 mph

Top Speed

Best For

Track35%

City65%

Cornering60%

Daily Riding70%

Touring55%

Passenger50%

Rider Profile

Best For	This is a restricted or 'reduced effect' variant of the GPZ 500 S, likely detuned for licensing or insurance purposes, making it well suited to newer riders stepping up from smaller bikes.
Purpose	Built as an approachable, budget-friendly sport-tourer for learning cornering and daily commuting rather than chasing outright performance.
Rider Fit	The lightweight parallel-twin chassis and modest seat height make it manageable for shorter or less experienced riders without demanding great strength.
Character	A forgiving, predictable middleweight with a soft power delivery that encourages smooth riding rather than aggressive throttle inputs.
Not Ideal For	Not for riders seeking strong acceleration, track-day thrills, or serious long-distance touring comfort.

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