What category is the 1981 Honda CB 650?

The 1981 Honda CB 650 has a Category of Classic.

What is the engine size of the 1981 Honda CB 650?

The 1981 Honda CB 650 has a Capacity: of 627.00 ccm (38.26 cubic inches).

What type of engine does the 1981 Honda CB 650 have?

The 1981 Honda CB 650 has a Engine type of In-line four.

What is the engine power of the 1981 Honda CB 650?

The 1981 Honda CB 650 has a Power of 63.00.

Is the 1981 Honda CB 650 air cooled or liquid cooled?

The 1981 Honda CB 650 has a Cooling system of Air.

How many gears does the 1981 Honda CB 650 have?

The 1981 Honda CB 650 has a Gearbox of 5-speed.

How much does the 1981 Honda CB 650 weigh?

The 1981 Honda CB 650 has a Weight incl. oil, gas, etc of 216.0 kg (476.2 pounds).

What is the top speed of the 1981 Honda CB 650?

The 1981 Honda CB 650 has a Top speed of 183.0 km/h (113.7 mph).

Honda CB 650 - 1981 Specifications and Reviews

Name: 1981 Honda CB 650
Brand: Honda

The 1981 Honda CB 650 is an accessible middleweight naked bike that appeals to riders seeking reliable, everyday performance. Known for its smooth inline-four engine and manageable power delivery, it balances practicality with spirited handling. This classic machine established Honda's reputation for building versatile bikes that serve equally well as commuters or weekend runners.

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General information
Category	Classic
Year	1981
Model	Honda CB 650

Engine and Transmission Specifications
Transmission typefinal drive	Chain
Gearbox	5-speed
Cooling system	Air
Fuel control	OHC
Valves per cylinder	2
Bore x stroke	59.8 x 55.8 mm (2.4 x 2.2 inches)
Compression	9.0:1
Power	63.00
Stroke	4
Engine type	In-line four
Capacity:	627.00 ccm (38.26 cubic inches)
Physical measures and capacities
Weight incl. oil, gas, etc	216.0 kg (476.2 pounds)
Honda CB 650 dimensions and frame
Rear brakes	Expanding brake
Front brakes	Dual disc
Rear tyre dimensions	3.75-18
Front tyre dimensions	3.25-19
Speed and acceleration
Top speed	183.0 km/h (113.7 mph)

Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	18.00 litres (4.76 gallons)

Performance Profile & Rider Fit

63 hp

Peak Power

5.2s

0-60 mph

113.7 mph

Top Speed

Best For

Track35%

City60%

Cornering60%

Daily Riding62%

Touring45%

Passenger50%

Rider Profile

Best For	Suits riders with at least some prior experience who enjoy a classic air-cooled inline-four with modest but usable power delivery.
Purpose	A versatile naked roadster best suited to spirited weekend rides and everyday street use rather than dedicated touring or racing.
Rider Fit	A moderate curb weight and upright naked-bike ergonomics make it manageable for riders of average height and strength.
Character	An air-cooled 1980s UJM classic that rewards smooth throttle inputs with a mechanical, old-school four-cylinder character.
Not Ideal For	Not ideal for riders seeking modern performance, long-distance touring comfort, or any off-road capability.

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