Naked Motorcycles
1981Honda CB 400 N
19 fields on record
The 1981 Honda CB 400 N is a lightweight middleweight sport bike designed for riders seeking accessible performance and everyday practicality. Its air-cooled twin engine delivers 43 horsepower with nimble handling, making it ideal for commuting and weekend riding. Known for reliability and user-friendly mechanics, this bike represents Honda's commitment to affordable sportbike engineering.
- Capacity
- 395.0 ccm
- Engine
- Parallel Twin, four-stroke
- Gearbox
- 6-speed
- Wet weight
- 185.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 43.0 HP (31.6 kW) @ 8500 RPM
What’s new for the 1981 Honda CB 400 N
vs the 1980| Spec | 1980 | 1981 |
|---|---|---|
| Power | 40.0 HP (29.4 kW) | 43.0 HP (31.6 kW) @ 8500 RPM |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Best suited for relaxed cruising, short commutes, and casual weekend rides rather than performance riding.
- Built for
- A laid-back, air-cooled twin with modest power delivery and classic 1980s cruiser styling that rewards smooth, unhurried riding.
- Not ideal for
- Not a good fit for riders seeking high-speed thrills, aggressive cornering performance, or off-road capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 395.0 ccm
- Power
- 43.0 HP (31.6 kW) @ 8500 RPM
- Engine type
- Parallel Twin, four-stroke
- Power/weight ratio
- 0.2324 HP/kg (wet)
- Bore x stroke
- 70.5 x 50.6 mm
- Compression
- 9.3:1
- Cooling system
- Air
- Valves per cylinder
- 3
- Torque
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 161.0 km/h (100.0 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Dual disc
- Rear brakes
- Expanding brake
- Front tyre
- 3.60-19
- Rear tyre
- 4.10-18
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 1980 | 1981 | 1982 | 1983 |
|---|---|---|---|---|
| Capacity | 395 cc | 395 cc | 395 cc | 395 cc |
| Fuel capacity | 14 L | 14 L | 14 L | 14 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Honda CB 400 N?
The 1981 Honda CB 400 N has a Capacity of 395.0 ccm (24.10 cubic inches).
What engine power does the Honda CB 400 N have?
The 1981 Honda CB 400 N has a Power of 43.0 HP (31.6 kW) @ 8500 RPM.
How many gears does the Honda CB 400 N have?
The 1981 Honda CB 400 N has a Gearbox of 6-speed.
How much does the Honda CB 400 N weigh?
The 1981 Honda CB 400 N has a Wet weight of 185.0 kg (407.9 pounds).
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