Across 7 covered model years from 2018 to 2025, the Kawasaki Z900RS motorcycle has supplied wet/running weights ranging from 472 lb (214.1 kg) to 474.2 lb (215.1 kg).
Kawasaki Z900RS weight overview
At this weight, footing and parking technique matter. Once moving, geometry and balance can disguise the mass, but you still have to manage the full weight at walking speed.
Heavy Motorcycle
How heavy is the Kawasaki Z900RS?
wet weight
Using a model-level wet weight comparison, the Kawasaki Z900RS is heavier than about 62.5% of 60 Kawasaki naked bikes with compatible weight data.
Ready-to-ride weight range
Bike + rider total weight
These totals use the model’s representative wet weight. They exclude riding gear, luggage and a passenger.
Kawasaki Z900RS weight & related specs
| Model years covered | 2018, 2019, 2020, 2021, 2022, 2023, 2025 |
|---|---|
| Wet / running weight | 472 lb (214.1 kg) to 474.2 lb (215.1 kg) |
| Engine displacement | 948 cc |
| Power | 110 hp |
| Torque | 72.3 lb-ft (98 Nm) to 72.6 lb-ft (98.5 Nm) |
| Fuel capacity | 4.5 US gal (17.03 L) |
| Full-tank fuel weight (estimated) | 28 lb (12.7 kg) |
Weight changes by model year
The 2018 model is used as the baseline where data is available. Only later supplied values that differ are shown below. A year pill does not mean every individual weight field was supplied for that year.
Useful weight calculations
| Horsepower per 100 lb | 23.2 hp / 100 lb to 23.21 hp / 100 lb |
|---|---|
| Pounds per horsepower | 4.31 lb / hp |
| Torque per 100 lb | 15.24 lb-ft / 100 lb to 15.39 lb-ft / 100 lb |
| Displacement per pound | 2 cc / lb |
| Weight per 100 cc | 49.8 lb / 100 cc to 50 lb / 100 cc |
| Fuel weight as % of bike weight | 5.9% to 5.9% |
What the weight numbers tell you
Kawasaki Z900RS weight FAQ
What is the Kawasaki Z900RS wet weight?
The supplied wet/running weight is 472 lb (214.1 kg) to 474.2 lb (215.1 kg) across the model years covered here. That figure is the most useful available number for real-world handling because operating fluids and fuel are included.
Is the Kawasaki Z900RS lighter or heavier than other Kawasaki naked bikes?
Weight is broadly typical for the category, landing around the 62nd percentile in this model-level Kawasaki comparison.
Which Kawasaki Z900RS years have different weight specs?
The supplied data shows different weight figures across the 2018, 2019, 2020, 2021, 2022, 2023, 2025 model years. Use the year-specific changes section above for the exact value attached to each changed year. No usable dry/wet figure was supplied for 2025.
How much does a full tank add to the Kawasaki Z900RS?
Based on the supplied 4.5 US gal (17.03 L) tank capacity, the gasoline itself weighs about 28 lb (12.7 kg) when full. On models with a wet/running weight, that fuel mass is already included in the listed ready-to-ride figure.
What is the combined Kawasaki Z900RS and rider weight?
Using the model’s representative wet/running weight and a 180 lb rider, the combined bike-and-rider mass is about 654.1 lb (296.7 kg) before riding gear, luggage or a passenger.
What is the Kawasaki Z900RS power-to-weight ratio?
Available model-year data produces 23.2 hp per 100 lb to 23.21 hp per 100 lb. It shows engine output relative to motorcycle mass rather than just quoting peak horsepower. That places it around the 90th percentile within the compatible Kawasaki naked bike power-to-weight comparison.
What is the Kawasaki Z900RS torque per 100 lb of bike weight?
Where compatible torque and weight figures are available, the model works out to 15.24 lb-ft per 100 lb to 15.39 lb-ft per 100 lb. This gives more context than torque alone because it relates engine twist to the mass it has to move.
How many cc does the Kawasaki Z900RS have per pound?
The available figures work out to 2 cc per lb. This is not a performance rating, but it is a useful way to compare engine size against total motorcycle mass.
How does the Kawasaki Z900RS compare with the median Kawasaki naked bike weight?
Compared with the median Kawasaki naked bike weight of 461.9 lb (209.5 kg), the model is roughly 12.2 lb (5.6 kg) heavier.
Motorcycle specifications can vary by model year, market, equipment and the exact dry/curb-weight definition. Calculated fuel-weight and ratio figures on this page are estimates derived from the supplied specifications. Confirm critical figures in the owner’s manual or on the official Kawasaki website.