For the 1978 model year, the Honda CB 400N motorcycle has a listed dry weight of 368.2 lb (167 kg).
Honda CB 400N weight overview
This is neither unusually light nor extremely heavy. For most riders the practical weight question is more about seat height, center of mass and low-speed balance than the scale number alone. The comparison uses dry weight because a usable wet/running figure was not supplied, so the actual ready-to-ride motorcycle will be heavier.
Middleweight Motorcycle
How heavy is the Honda CB 400N?
dry weight
Using a model-level dry weight comparison, the Honda CB 400N is heavier than about 58.3% of 18 Honda allround models 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.
Honda CB 400N weight & related specs
| Model years covered | 1978 |
|---|---|
| Dry weight | 368.2 lb (167 kg) |
| Engine displacement | 400 cc |
| Power | 42.9 hp |
| Torque | 24.5 lb-ft (33.2 Nm) |
| Fuel capacity | 3.7 US gal (14 L) |
| Full-tank fuel weight (estimated) | 23 lb (10.4 kg) |
Useful weight calculations
| Horsepower per 100 lb | 11.65 hp / 100 lb |
|---|---|
| Pounds per horsepower | 8.58 lb / hp |
| Torque per 100 lb | 6.65 lb-ft / 100 lb |
| Displacement per pound | 1.09 cc / lb |
| Weight per 100 cc | 92 lb / 100 cc |
| Fuel weight as % of bike weight | 6.2% |
| Weight with full tank | 391.2 lb (177.4 kg) |
What the weight numbers tell you
Honda CB 400N weight FAQ
How heavy is the Honda CB 400N?
Listed dry weight is 368.2 lb (167 kg). Because no usable wet/running figure was supplied, treat that as a lower starting point rather than the exact on-road weight.
Is the Honda CB 400N heavy compared with other Honda allround models?
It sits fairly close to the middle of the category. Its representative dry weight is around the 58th percentile among 18 compatible Honda allround models.
How much does the Honda CB 400N fuel weigh?
The listed tank capacity is 3.7 US gal (14 L). Using approximately 0.745 kg/L gasoline, a full tank is roughly 23 lb (10.4 kg). That is an estimate for fuel mass, not an official Honda curb-weight calculation.
How heavy is the Honda CB 400N with an average-size rider?
A 180 lb rider brings the simple bike-plus-rider total to roughly 548.2 lb (248.6 kg) using the representative dry figure. Gear and luggage would add more.
How much horsepower does the Honda CB 400N have per 100 lb?
Where compatible power and weight figures are available, it works out to 11.65 hp per 100 lb. That places it around the 50th percentile within the compatible Honda allround power-to-weight comparison.
Can I treat the Honda CB 400N dry weight as curb weight?
No. The usable figure is dry weight, so it excludes at least some operating fluids. Dry weight plus the estimated full fuel load is about 391.2 lb (177.4 kg), and oil/coolant or definition differences may add more.
What does the Honda CB 400N weigh with a full tank?
Filling the listed tank brings the calculated bike weight to roughly 391.2 lb (177.4 kg). This estimate is most useful when no official wet/running figure is available.
How much of the Honda CB 400N total weight comes from fuel?
Based on the available weight basis, a full tank of gasoline represents about 6.2% of the motorcycle’s weight.
How does Honda CB 400N torque compare with its weight?
The calculated torque-to-weight range is 6.65 lb-ft per 100 lb. It is useful for comparing bikes with very different overall weights.
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.