Across the 1977 and 1978 model years, the Honda CB 125 S (J) motorcycle has a listed wet/running weight of 231.5 lb (105 kg).
Honda CB 125 S (J) weight overview
This sits at the very light end of motorcycle mass, which is especially useful when the bike has to be moved around by hand or held on uneven ground.
Very Light Motorcycle
How heavy is the Honda CB 125 S (J)?
wet weight
Using a model-level wet weight comparison, the Honda CB 125 S (J) is lighter than about 81.9% of 36 Honda allround models 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.
Honda CB 125 S (J) weight & related specs
| Model years covered | 1977, 1978 |
|---|---|
| Wet / running weight | 231.5 lb (105 kg) |
| Engine displacement | 124 cc |
| Fuel capacity | 2.51 US gal (9.5 L) |
| Full-tank fuel weight (estimated) | 15.6 lb (7.1 kg) |
Weight changes by model year
Useful weight calculations
| Displacement per pound | 0.54 cc / lb |
|---|---|
| Weight per 100 cc | 186.7 lb / 100 cc |
| Fuel weight as % of bike weight | 6.7% |
What the weight numbers tell you
Honda CB 125 S (J) weight FAQ
How heavy is the Honda CB 125 S (J) ready to ride?
Listed ready-to-ride weight is 231.5 lb (105 kg). The year-specific section above shows which years use each figure where the supplied value changes.
Is the Honda CB 125 S (J) heavy compared with other Honda allround models?
It is on the lighter side in this dataset. Its representative wet weight sits around the 18th weight percentile among 36 Honda allround models, meaning most compatible models are heavier.
Does the Honda CB 125 S (J) weight change by model year?
Not in the usable weight data on this page. Across the covered 1977-1978 years, the supplied weight figure remains the same where comparable values are available.
How much does the Honda CB 125 S (J) fuel weigh?
The listed tank capacity is 2.51 US gal (9.5 L). Using approximately 0.745 kg/L gasoline, a full tank is roughly 15.6 lb (7.1 kg). That is an estimate for fuel mass, not an official Honda curb-weight calculation.
How heavy is the Honda CB 125 S (J) with an average-size rider?
A 180 lb rider brings the simple bike-plus-rider total to roughly 411.5 lb (186.6 kg) using the representative wet/running figure. Gear and luggage would add more.
How much of the Honda CB 125 S (J) total weight comes from fuel?
Based on the available weight basis, a full tank of gasoline represents about 6.7% of the motorcycle’s weight.
What is the Honda CB 125 S (J) engine-size-to-weight ratio?
Engine displacement relative to bike weight is 0.54 cc per lb. It can help compare motorcycles from very different displacement classes without relying on cc alone.
How far is the Honda CB 125 S (J) from the median Honda allround weight?
The model sits about 88.2 lb (40 kg) lighter than the compatible median Honda allround weight used on this page.
Will the Honda CB 125 S (J) 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 Honda Powersports website.