Naked Motorcycles
1981Kawasaki Z 550
19 fields on record
The 1981 Kawasaki Z 550 is an accessible mid-range classic that appeals to riders seeking reliable, manageable performance without complexity. Its air-cooled four-cylinder engine delivers 50 horsepower with smooth power delivery, making it ideal for commuting and casual touring. The Z 550 is best known for combining practical engineering with nimble handling and legendary Kawasaki build quality.
- Capacity
- 553.0 ccm
- Engine
- In-line four
- Gearbox
- 6-speed
- Wet weight
- 216.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 50.0 HP (36.8 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Best suited to classic-bike enthusiasts who want an air-cooled inline-four for weekend rides and light commuting rather than outright performance.
- Built for
- A charming, revvy air-cooled four with vintage Japanese UJM styling and a smooth, linear power delivery rather than aggressive thrills.
- Not ideal for
- Not a good fit for riders seeking modern performance, long-distance touring comfort, or any off-road capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 553.0 ccm
- Power
- 50.0 HP (36.8 kW)
- Engine type
- In-line four
- Power/weight ratio
- 0.2315 HP/kg
- Bore x stroke
- 58.0 x 52.4 mm
- Compression
- 9.5:1
- Cooling system
- Air
- Valves per cylinder
- 2
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 173.0 km/h (107.5 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Dual disc
- Rear brakes
- Single disc
- Front tyre
- 3.25-19
- Rear tyre
- 3.75-18
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
Rider Reviews
Common questions
What is the engine size of the Kawasaki Z 550?
The 1981 Kawasaki Z 550 has a Capacity of 553.0 ccm (33.75 cubic inches).
What engine power does the Kawasaki Z 550 have?
The 1981 Kawasaki Z 550 has a Power of 50.0 HP (36.8 kW).
How many gears does the Kawasaki Z 550 have?
The 1981 Kawasaki Z 550 has a Gearbox of 6-speed.
How much does the Kawasaki Z 550 weigh?
The 1981 Kawasaki Z 550 has a Wet weight of 216.0 kg (476.2 pounds).
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