For the 1998 model year, the Yamaha ST 125 motorcycle has a listed dry weight of 242.5 lb (110 kg).
Yamaha ST 125 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. The comparison uses dry weight because a usable wet/running figure was not supplied, so the actual ready-to-ride motorcycle will be heavier.
Light Motorcycle
How heavy is the Yamaha ST 125?
dry weight
Using a model-level dry weight comparison, the Yamaha ST 125 is lighter than about 62.3% of 110 Yamaha motorcycles with compatible weight data.
Dry weight
Bike + rider total weight
These totals use the model’s representative dry weight. They exclude riding gear, luggage and a passenger.
Yamaha ST 125 weight & related specs
| Model years covered | 1998 |
|---|---|
| Dry weight | 242.5 lb (110 kg) |
| Engine displacement | 125 cc |
| Fuel capacity | 2.64 US gal (10 L) |
| Full-tank fuel weight (estimated) | 16.4 lb (7.5 kg) |
Useful weight calculations
| Displacement per pound | 0.52 cc / lb |
|---|---|
| Weight per 100 cc | 194 lb / 100 cc |
| Fuel weight as % of bike weight | 6.8% |
| Weight with full tank | 258.9 lb (117.5 kg) |
What the weight numbers tell you
Yamaha ST 125 weight FAQ
What is the Yamaha ST 125 dry weight?
The available dry weight is 242.5 lb (110 kg). Actual ready-to-ride weight will be higher after fuel and operating fluids are added.
Is the Yamaha ST 125 lighter or heavier than other Yamaha motorcycles?
Weight is broadly typical for the category, landing around the 38th percentile in this model-level Yamaha comparison.
How much does a full tank add to the Yamaha ST 125?
Based on the supplied 2.64 US gal (10 L) tank capacity, the gasoline itself weighs about 16.4 lb (7.5 kg) when full. This helps explain part of the difference between dry and ready-to-ride mass.
What is the combined Yamaha ST 125 and rider weight?
Using the model’s representative dry weight and a 180 lb rider, the combined bike-and-rider mass is about 422.5 lb (191.6 kg) before riding gear, luggage or a passenger.
Is the listed Yamaha ST 125 weight ready to ride?
The published usable figure is dry, not curb weight. A simple dry-plus-full-fuel estimate is 258.9 lb (117.5 kg), but that still is not a substitute for an official wet/curb specification.
What does the Yamaha ST 125 weigh with a full tank?
Filling the listed tank brings the calculated bike weight to roughly 258.9 lb (117.5 kg). This estimate is most useful when no official wet/running figure is available.
How much of the Yamaha ST 125 total weight comes from fuel?
The calculated full-tank fuel mass is about 6.8% of the bike’s listed weight. This helps show why a dry-weight number can understate what you actually manage on the road.
What is the Yamaha ST 125 engine-size-to-weight ratio?
The available figures work out to 0.52 cc per lb. This is not a performance rating, but it is a useful way to compare engine size against total motorcycle mass.
How far is the Yamaha ST 125 from the median Yamaha motorcycle weight?
Compared with the median Yamaha motorcycle weight of 291 lb (132 kg), the model is roughly 48.5 lb (22 kg) lighter.
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.