Kawasaki GPZ 900 R (reduced Effect) - 1985 Specifications and Reviews

The 1985 Kawasaki GPZ 900 R (reduced effect) is a sport-touring motorcycle designed for riders seeking a blend of performance and practicality. Powered by a 908cc liquid-cooled four-stroke inline-four engine producing 100 horsepower, it delivers genuine sportiness with touring capability. Best known as an accessible alternative to the unrestricted GPZ 900 R, this model remains iconic for combining thrilling performance with everyday usability.

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General information

CategorySport touring
Year1985
ModelKawasaki GPZ 900 R (reduced effect)
 
 

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Fuel controlDOHC
Valves per cylinder4
Bore x stroke72.5 x 55.0 mm (2.9 x 2.2 inches)
Compression11.0:1
Top speed240.0 km/h (149.1 mph)
Power100.00
Engine typeIn-line four, four-stroke
Capacity:908.00 ccm (55.41 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Front brakesDual disc
Rear tyre dimensions130/80-18
Front tyre dimensions120/80-16

Physical measures and capacities

Fuel capacity22.00 litres (5.81 gallons)
Weight incl. oil, gas, etc257.0 kg (566.6 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

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 ForBest 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.
PurposeDesigned 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 FitAt 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.
CharacterA 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 ForNot 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.

Rider Reviews

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