Across the 2023 and 2025 model years, the Yamaha R25 motorcycle has a listed wet/running weight of 366 lb (166 kg).
Yamaha R25 weight overview
This is middleweight territory: substantial enough to feel planted, but still well short of heavyweight touring and large-cruiser mass.
Middleweight Motorcycle
How heavy is the Yamaha R25?
wet weight
Using a model-level wet weight comparison, the Yamaha R25 is lighter than about 69.3% of 83 Yamaha sport bikes with compatible weight data.
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.
Yamaha R25 weight & related specs
| Model years covered | 2023, 2025 |
|---|---|
| Wet / running weight | 366 lb (166 kg) |
| Engine displacement | 250 cc |
| Power | 35.5 hp |
| Torque | 17.4 lb-ft (23.6 Nm) |
| Fuel capacity | 3.7 US gal (14 L) |
| Full-tank fuel weight (estimated) | 23 lb (10.4 kg) |
Weight by model year
Useful weight calculations
| Horsepower per 100 lb | 9.7 hp / 100 lb |
|---|---|
| Pounds per horsepower | 10.31 lb / hp |
| Torque per 100 lb | 4.76 lb-ft / 100 lb |
| Displacement per pound | 0.68 cc / lb |
| Weight per 100 cc | 146.4 lb / 100 cc |
| Fuel weight as % of bike weight | 6.3% |
What the weight numbers tell you
Yamaha R25 weight FAQ
How much does the Yamaha R25 weigh?
The available wet/running figure is 366 lb (166 kg). This is more representative of the motorcycle you actually push, park and ride than a dry-only specification.
How does the Yamaha R25 weight compare with similar Yamahas?
Relatively light. On a model-level comparison, it is lighter than about 69.3% of 83 Yamaha sport bikes with the same weight basis.
Are all Yamaha R25 model years the same weight?
There is not enough comparable model-year weight data to determine a year-to-year change. A usable weight figure is available for 2023. No usable dry/wet figure was supplied for 2025.
What does a full tank of gas weigh on the Yamaha R25?
A full tank works out to about 23 lb (10.4 kg) from the listed 3.7 US gal (14 L) capacity. Actual fuel density varies slightly, so treat it as a practical estimate.
What does the Yamaha R25 weigh with a 180 lb rider?
The approximate combined total is 546 lb (247.6 kg) with a 180 lb rider, based on the representative wet/running weight used on this page.
Is the Yamaha R25 strong for its weight?
The calculated range is 9.7 hp per 100 lb. This ratio is usually more informative for acceleration comparisons than horsepower alone. That places it around the 25th percentile within the compatible Yamaha sport power-to-weight comparison.
What is the Yamaha R25 torque-to-weight ratio?
Available data gives 4.76 lb-ft per 100 lb. That ratio helps explain how strong the engine is relative to the bike’s mass, especially at lower speeds.
How large is the Yamaha R25 engine for its weight?
The model has about 0.68 cc per lb in the available data. This simply shows how much engine displacement there is for each pound of motorcycle weight.
Is the Yamaha R25 above or below the typical Yamaha sport bike weight?
The representative wet weight is about 48.1 lb (21.8 kg) lighter than the median Yamaha sport bike weight of 414 lb (187.8 kg) in this dataset.
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 Yamaha Motorsports website.