Across the 1975, 1976 and 1977 model years, the Honda CB 400 F motorcycle has a listed wet/running weight of 405.7 lb (184 kg).
Honda CB 400 F 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.
Middleweight Motorcycle
How heavy is the Honda CB 400 F?
wet weight
Using a model-level wet weight comparison, the Honda CB 400 F is lighter than about 59.3% of 43 Honda 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.
Honda CB 400 F weight & related specs
| Model years covered | 1975, 1976, 1977 |
|---|---|
| Wet / running weight | 405.7 lb (184 kg) |
| Engine displacement | 408 cc |
| Power | 37 hp |
| Fuel capacity | 3.7 US gal (14 L) |
| Full-tank fuel weight (estimated) | 23 lb (10.4 kg) |
Weight changes by model year
Useful weight calculations
| Horsepower per 100 lb | 9.12 hp / 100 lb |
|---|---|
| Pounds per horsepower | 10.96 lb / hp |
| Displacement per pound | 1.01 cc / lb |
| Weight per 100 cc | 99.4 lb / 100 cc |
| Fuel weight as % of bike weight | 5.7% |
What the weight numbers tell you
Honda CB 400 F weight FAQ
How heavy is the Honda CB 400 F ready to ride?
Listed ready-to-ride weight is 405.7 lb (184 kg). The year-specific section above shows which years use each figure where the supplied value changes.
Is the Honda CB 400 F heavy compared with other Honda classic motorcycles?
It sits fairly close to the middle of the category. Its representative wet weight is around the 41st percentile among 43 compatible Honda classic motorcycles.
Does the Honda CB 400 F weight change by model year?
Not in the usable weight data on this page. Across the covered 1975-1977 years, the supplied weight figure remains the same where comparable values are available.
How much does the Honda CB 400 F 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 400 F with an average-size rider?
A 180 lb rider brings the simple bike-plus-rider total to roughly 585.7 lb (265.6 kg) using the representative wet/running figure. Gear and luggage would add more.
How much horsepower does the Honda CB 400 F have per 100 lb?
Where compatible power and weight figures are available, it works out to 9.12 hp per 100 lb. That places it around the 52nd percentile within the compatible Honda classic power-to-weight comparison.
How much of the Honda CB 400 F total weight comes from fuel?
Based on the available weight basis, a full tank of gasoline represents about 5.7% of the motorcycle’s weight.
What is the Honda CB 400 F engine-size-to-weight ratio?
Engine displacement relative to bike weight is 1.01 cc per lb. It can help compare motorcycles from very different displacement classes without relying on cc alone.
How far is the Honda CB 400 F from the median Honda classic motorcycle weight?
The model sits about 39.7 lb (18 kg) lighter than the compatible median Honda classic motorcycle weight used on this page.
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.