Across the 1976 and 1978 model years, the Yamaha RD 125 DX motorcycle has a listed wet/running weight of 257.9 lb (117 kg).
Yamaha RD 125 DX 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 RD 125 DX?
wet weight
Using a model-level wet weight comparison, the Yamaha RD 125 DX is lighter than about 97% 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 RD 125 DX weight & related specs
| Model years covered | 1976, 1978 |
|---|---|
| Wet / running weight | 257.9 lb (117 kg) |
| Engine displacement | 125 cc |
| Fuel capacity | 3.04 US gal (11.5 L) |
| Full-tank fuel weight (estimated) | 18.9 lb (8.6 kg) |
Weight by model year
Useful weight calculations
| 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 DX weight FAQ
What is the Yamaha RD 125 DX wet weight?
The supplied wet/running weight is 257.9 lb (117 kg) across the model years covered here. That figure is the most useful available number for real-world handling because operating fluids and fuel are included.
Is the Yamaha RD 125 DX lighter or heavier than other Yamaha sport bikes?
It is comparatively light for this Yamaha category. The model lands near the 3rd percentile for weight in the compatible dataset.
Which Yamaha RD 125 DX years have different weight specs?
There is not enough comparable model-year weight data to determine a year-to-year change. A usable weight figure is available for 1976. No usable dry/wet figure was supplied for 1978.
How much does a full tank add to the Yamaha RD 125 DX?
Based on the supplied 3.04 US gal (11.5 L) tank capacity, the gasoline itself weighs about 18.9 lb (8.6 kg) when full. On models with a wet/running weight, that fuel mass is already included in the listed ready-to-ride figure.
What is the combined Yamaha RD 125 DX and rider weight?
Using the model’s representative wet/running weight and a 180 lb rider, the combined bike-and-rider mass is about 437.9 lb (198.6 kg) before riding gear, luggage or a passenger.
What is the Yamaha RD 125 DX displacement per pound?
The available figures work out to 0.48 cc per lb. This is not a performance rating, but it is a useful way to compare engine size against total motorcycle mass.
What is the Yamaha RD 125 DX weight difference versus the category median?
Compared with the median Yamaha sport bike weight of 414 lb (187.8 kg), the model is roughly 156.1 lb (70.8 kg) lighter.
Where will I notice the Yamaha RD 125 DX weight most?
The weight itself is unlikely to be the main difficulty. Rider reach, steering lock and where the mass sits may matter more at walking pace.
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.