Across 7 covered model years from 2019 to 2025, the Kawasaki KX450 motorcycle has supplied wet/running weights ranging from 242.3 lb (109.9 kg) to 242.5 lb (110 kg) and dry weights ranging from 231.9 lb (105.2 kg) to 233.2 lb (105.8 kg), depending on model year.
Kawasaki KX450 weight overview
This sits in a fairly light weight range. That does not guarantee easy handling, but it reduces the sheer mass you have to manage at a stop.
Light Motorcycle
How heavy is the Kawasaki KX450?
wet weight
Using a model-level wet weight comparison, the Kawasaki KX450 is heavier than about 85% of 30 Kawasaki motocross bikes with compatible weight data.
Dry vs ready-to-ride weight
Bike + rider total weight
These totals use the model’s representative wet weight. They exclude riding gear, luggage and a passenger.
Kawasaki KX450 weight & related specs
| Model years covered | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
|---|---|
| Wet / running weight | 242.3 lb (109.9 kg) to 242.5 lb (110 kg) |
| Dry weight | 231.9 lb (105.2 kg) to 233.2 lb (105.8 kg) |
| Engine displacement | 449 cc |
| Fuel capacity | 1.64 US gal (6.2 L) |
| Full-tank fuel weight (estimated) | 10.2 lb (4.6 kg) |
Weight changes by model year
The 2019 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
| Displacement per pound | 1.85 cc / lb |
|---|---|
| Weight per 100 cc | 54 lb / 100 cc to 54 lb / 100 cc |
| Fuel weight as % of bike weight | 4.2% |
| Weight with full tank | 242.1 lb (109.8 kg) to 243.4 lb (110.4 kg) |
What the weight numbers tell you
Kawasaki KX450 weight FAQ
What does the Kawasaki KX450 weigh ready to ride?
The supplied figures span 242.3 lb (109.9 kg) to 242.5 lb (110 kg) for wet/running weight and 231.9 lb (105.2 kg) to 233.2 lb (105.8 kg) for dry weight across the years in this page. Wet weight is the better guide to what you actually manage on the road.
Is the Kawasaki KX450 heavy compared with other Kawasaki motocross bikes?
Relatively speaking, it is on the heavier side. The model sits near the 85th weight percentile in its Kawasaki category, so it is heavier than most of the compatible comparison set.
Does the Kawasaki KX450 weight change by model year?
Not every covered year uses the same figure. The page groups identical values together and lists the later model years where the supplied weight specification changes.
How much does the Kawasaki KX450 fuel weigh?
The listed tank capacity is 1.64 US gal (6.2 L). Using approximately 0.745 kg/L gasoline, a full tank is roughly 10.2 lb (4.6 kg). That is an estimate for fuel mass, not an official Kawasaki curb-weight calculation.
How heavy is the Kawasaki KX450 with an average-size rider?
A 180 lb rider brings the simple bike-plus-rider total to roughly 422.5 lb (191.6 kg) using the representative wet/running figure. Gear and luggage would add more.
What does the Kawasaki KX450 weigh with a full tank?
Using the listed dry weight plus the calculated fuel mass, the estimated weight with a full tank is 242.1 lb (109.8 kg) to 243.4 lb (110.4 kg). That still may not equal official curb weight because dry-weight definitions can exclude other fluids or equipment.
What is the Kawasaki KX450 dry-to-wet weight difference?
The supplied model-year data shows roughly 9 lb (4.1 kg) to 10.6 lb (4.8 kg) between dry and wet/running weight. The exact gap can vary by year and by the manufacturer’s weight definition.
How many cc does the Kawasaki KX450 have per pound?
Engine displacement relative to bike weight is 1.85 cc per lb. It can help compare motorcycles from very different displacement classes without relying on cc alone.
How does the Kawasaki KX450 compare with the median Kawasaki motocross bike weight?
The model sits about 72.8 lb (33 kg) heavier than the compatible median Kawasaki motocross bike weight used on this page.
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.