Across 11 covered model years from 2008 to 2021, the Yamaha YZF-R125 motorcycle has supplied wet/running weights ranging from 304.2 lb (138 kg) to 317.5 lb (144 kg) and dry weights ranging from 278.9 lb (126.5 kg), depending on model year.
Yamaha YZF-R125 weight overview
The weight is relatively manageable, so the bike should demand less effort than a heavyweight machine when backing up, parking or making slow-speed corrections.
Light Motorcycle
How heavy is the Yamaha YZF-R125?
wet weight
Using a model-level wet weight comparison, the Yamaha YZF-R125 is lighter than about 83.1% of 83 Yamaha sport 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.
Yamaha YZF-R125 weight & related specs
| Model years covered | 2008, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2021 |
|---|---|
| Wet / running weight | 304.2 lb (138 kg) to 317.5 lb (144 kg) |
| Dry weight | 278.9 lb (126.5 kg) |
| Engine displacement | 124.7 cc |
| Power | 11 hp to 15 hp |
| Torque | 8.5 lb-ft (11.5 Nm) to 9.1 lb-ft (12.4 Nm) |
| Fuel capacity | 3.04 US gal (11.5 L) to 3.65 US gal (13.8 L) |
| Full-tank fuel weight (estimated) | 18.9 lb (8.6 kg) to 22.7 lb (10.3 kg) |
Weight changes by model year
The 2008 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 | 3.51 hp / 100 lb to 5.31 hp / 100 lb |
|---|---|
| Pounds per horsepower | 18.84 lb / hp to 28.46 lb / hp |
| Torque per 100 lb | 2.67 lb-ft / 100 lb to 3.23 lb-ft / 100 lb |
| Displacement per pound | 0.39 cc / lb to 0.45 cc / lb |
| Weight per 100 cc | 223.6 lb / 100 cc to 254.6 lb / 100 cc |
| Fuel weight as % of bike weight | 5.9% to 8.1% |
| Weight with full tank | 301.6 lb (136.8 kg) |
What the weight numbers tell you
Yamaha YZF-R125 weight FAQ
What is the Yamaha YZF-R125 dry and wet weight?
Across the covered 2008, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2021 years, listed wet/running weight is 304.2 lb (138 kg) to 317.5 lb (144 kg) and listed dry weight is 278.9 lb (126.5 kg). Check the year-change section because the exact figure can vary by model year.
Is the Yamaha YZF-R125 lighter or heavier than other Yamaha sport bikes?
It is comparatively light for this Yamaha category. The model lands near the 17th percentile for weight in the compatible dataset.
Which Yamaha YZF-R125 years have different weight specs?
The supplied data shows different weight figures across the 2008, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2021 model years. Use the year-specific changes section above for the exact value attached to each changed year.
How much does a full tank add to the Yamaha YZF-R125?
Based on the supplied 3.04 US gal (11.5 L) to 3.65 US gal (13.8 L) tank capacity, the gasoline itself weighs about 18.9 lb (8.6 kg) to 22.7 lb (10.3 kg) when full. This helps explain part of the difference between dry and ready-to-ride mass.
What is the combined Yamaha YZF-R125 and rider weight?
Using the model’s representative wet/running weight and a 180 lb rider, the combined bike-and-rider mass is about 488.6 lb (221.6 kg) before riding gear, luggage or a passenger.
What is the Yamaha YZF-R125 power-to-weight ratio?
Available model-year data produces 3.51 hp per 100 lb to 5.31 hp per 100 lb. It shows engine output relative to motorcycle mass rather than just quoting peak horsepower. That places it around the 10th percentile within the compatible Yamaha sport power-to-weight comparison.
What is the estimated Yamaha YZF-R125 weight with a full tank of gas?
Using the listed dry weight plus the calculated fuel mass, the estimated weight with a full tank is 301.6 lb (136.8 kg). That still may not equal official curb weight because dry-weight definitions can exclude other fluids or equipment.
What is the Yamaha YZF-R125 torque per 100 lb of bike weight?
Where compatible torque and weight figures are available, the model works out to 2.67 lb-ft per 100 lb to 3.23 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 Yamaha YZF-R125 have per pound?
The available figures work out to 0.39 cc per lb to 0.45 cc per lb. This is not a performance rating, but it is a useful way to compare engine size against total motorcycle mass.
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.