Across the 1973, 1974 and 1975 model years, the Yamaha RD 125 motorcycle has a listed wet/running weight of 257.9 lb (117 kg).
Yamaha RD 125 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 Yamaha RD 125?
wet weight
Using a model-level wet weight comparison, the Yamaha RD 125 is lighter than about 86.8% of 34 Yamaha classic motorcycles 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 RD 125 weight & related specs
| Model years covered | 1973, 1974, 1975 |
|---|---|
| Wet / running weight | 257.9 lb (117 kg) |
| Engine displacement | 125 cc |
| Power | 17 hp |
| Fuel capacity | 3.04 US gal (11.5 L) |
| Full-tank fuel weight (estimated) | 18.9 lb (8.6 kg) |
Weight changes by model year
Useful weight calculations
| Horsepower per 100 lb | 6.59 hp / 100 lb |
|---|---|
| Pounds per horsepower | 15.17 lb / hp |
| Displacement per pound | 0.48 cc / lb |
| Weight per 100 cc | 206.4 lb / 100 cc |
| Fuel weight as % of bike weight | 7.3% |
What the weight numbers tell you
Yamaha RD 125 weight FAQ
How heavy is the Yamaha RD 125 ready to ride?
Listed ready-to-ride weight is 257.9 lb (117 kg). The year-specific section above shows which years use each figure where the supplied value changes.
Is the Yamaha RD 125 heavy compared with other Yamaha classic motorcycles?
It is on the lighter side in this dataset. Its representative wet weight sits around the 13th weight percentile among 34 Yamaha classic motorcycles, meaning most compatible models are heavier.
Does the Yamaha RD 125 weight change by model year?
Not in the usable weight data on this page. Across the covered 1973-1975 years, the supplied weight figure remains the same where comparable values are available.
How much does the Yamaha RD 125 fuel weigh?
The listed tank capacity is 3.04 US gal (11.5 L). Using approximately 0.745 kg/L gasoline, a full tank is roughly 18.9 lb (8.6 kg). That is an estimate for fuel mass, not an official Yamaha curb-weight calculation.
How heavy is the Yamaha RD 125 with an average-size rider?
A 180 lb rider brings the simple bike-plus-rider total to roughly 437.9 lb (198.6 kg) using the representative wet/running figure. Gear and luggage would add more.
How much horsepower does the Yamaha RD 125 have per 100 lb?
Where compatible power and weight figures are available, it works out to 6.59 hp per 100 lb. That places it around the 15th percentile within the compatible Yamaha classic power-to-weight comparison.
What is the Yamaha RD 125 displacement per pound?
Engine displacement relative to bike weight is 0.48 cc per lb. It can help compare motorcycles from very different displacement classes without relying on cc alone.
What is the Yamaha RD 125 weight difference versus the category median?
The model sits about 117.9 lb (53.5 kg) lighter than the compatible median Yamaha classic motorcycle weight used on this page.
Will the Yamaha RD 125 feel heavy at low speed?
Its low mass should make hand-moving and parking easier than on most full-size road motorcycles. Seat height and center of mass can still change how manageable it feels.
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.