What category is the 1981 Honda CB 400 N (reduced Effect)?

The 1981 Honda CB 400 N (reduced Effect) has a Category of Classic.

What is the engine size of the 1981 Honda CB 400 N (reduced Effect)?

The 1981 Honda CB 400 N (reduced Effect) has a Capacity: of 395.00 ccm (24.10 cubic inches).

What type of engine does the 1981 Honda CB 400 N (reduced Effect) have?

The 1981 Honda CB 400 N (reduced Effect) has a Engine type of Twin.

What is the engine power of the 1981 Honda CB 400 N (reduced Effect)?

The 1981 Honda CB 400 N (reduced Effect) has a Power of 27.00.

Is the 1981 Honda CB 400 N (reduced Effect) air cooled or liquid cooled?

The 1981 Honda CB 400 N (reduced Effect) has a Cooling system of Air.

How many gears does the 1981 Honda CB 400 N (reduced Effect) have?

The 1981 Honda CB 400 N (reduced Effect) has a Gearbox of 6-speed.

How much does the 1981 Honda CB 400 N (reduced Effect) weigh?

The 1981 Honda CB 400 N (reduced Effect) has a Weight incl. oil, gas, etc of 185.0 kg (407.9 pounds).

What is the top speed of the 1981 Honda CB 400 N (reduced Effect)?

The 1981 Honda CB 400 N (reduced Effect) has a Top speed of 137.0 km/h (85.1 mph).

Honda CB 400 N (reduced Effect) - 1981 Specifications and Reviews

Name: 1981 Honda CB 400 N (reduced Effect)
Brand: Honda

The 1981 Honda CB 400 N is an accessible middleweight twin perfect for beginners and experienced riders seeking reliable everyday performance. Its modest 27 horsepower, lightweight 185 kg frame, and forgiving handling characteristics make it ideal for city commuting and casual riding. Known for Honda's legendary dependability and ease of maintenance, this classic remains a favorite among purists.

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1981

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General information
Category	Classic
Year	1981
Model	Honda CB 400 N (reduced effect)

Engine and Transmission Specifications
Transmission typefinal drive	Chain
Gearbox	6-speed
Cooling system	Air
Fuel control	OHC
Valves per cylinder	3
Bore x stroke	70.5 x 50.6 mm (2.8 x 2.0 inches)
Compression	9.3:1
Power	27.00
Stroke	4
Engine type	Twin
Capacity:	395.00 ccm (24.10 cubic inches)
Physical measures and capacities
Weight incl. oil, gas, etc	185.0 kg (407.9 pounds)
Honda CB 400 N (reduced Effect) dimensions and frame
Rear brakes	Expanding brake
Front brakes	Dual disc
Rear tyre dimensions	4.10-18
Front tyre dimensions	3.60-19
Speed and acceleration
Top speed	137.0 km/h (85.1 mph)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	14.00 litres (3.70 gallons)

Performance Profile & Rider Fit

27 hp

Peak Power

9.5s

0-60 mph

85.1 mph

Top Speed

Best For

Track20%

City65%

Cornering50%

Daily Riding60%

Touring40%

Passenger40%

Rider Profile

Best For	This is a low-power, forgiving naked bike well suited to beginners or riders returning to motorcycling after a break, especially given it is a restricted 'reduced effect' version aimed at learner license limits.
Purpose	It is best suited for relaxed commuting, learning fundamentals, and easy urban or suburban riding rather than any performance-oriented use.
Rider Fit	The moderate 185 kg weight and low seat-friendly naked layout make it manageable for smaller or less experienced riders without excessive physical strain.
Character	It has a mild-mannered, approachable personality with smooth low-end delivery typical of an air-cooled twin, prioritizing predictability over excitement.
Not Ideal For	It is not for riders seeking high speed, aggressive cornering performance, or serious long-distance touring comfort.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.