Naked Motorcycles
1981Honda CB 650
19 fields on record
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.
- Capacity
- 627.0 ccm
- Engine
- In-line four
- Gearbox
- 5-speed
- Wet weight
- 216.0 kg
- Seat height
- Not on record
Know it? Add it → - Power
- 63.0 HP (46.3 kW) @ 9000 RPM
What’s new for the 1981 Honda CB 650
vs the 1980| Spec | 1980 | 1981 |
|---|---|---|
| Wet weight | 220.0 kg (485.0 pounds) | 216.0 kg (476.2 pounds) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- A versatile naked roadster best suited to spirited weekend rides and everyday street use rather than dedicated touring or racing.
- Built for
- 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.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 627.0 ccm
- Power
- 63.0 HP (46.3 kW) @ 9000 RPM
- Engine type
- In-line four
- Power/weight ratio
- 0.2917 HP/kg (wet)
- Bore x stroke
- 59.8 x 55.8 mm
- Compression
- 9.0:1
- Cooling system
- Air
- Valves per cylinder
- 2
- Torque
- Not on record - add it
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 183.0 km/h (113.7 mph)
Dimensions & weight
Brakes & wheels
- Front brakes
- Dual disc
- Rear brakes
- Expanding brake
- Front tyre
- 3.25-19
- Rear tyre
- 3.75-18
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 |
|---|---|---|---|
| Capacity | 627 cc | 627 cc | 627 cc |
| Fuel capacity | 18 L | 18 L | 18 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 650?
The 1981 Honda CB 650 has a Capacity of 627.0 ccm (38.26 cubic inches).
What engine power does the Honda CB 650 have?
The 1981 Honda CB 650 has a Power of 63.0 HP (46.3 kW) @ 9000 RPM.
How many gears does the Honda CB 650 have?
The 1981 Honda CB 650 has a Gearbox of 5-speed.
How much does the Honda CB 650 weigh?
The 1981 Honda CB 650 has a Wet weight of 216.0 kg (476.2 pounds).
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