The 1980 Honda CB650 could reach roughly 120–125 mph (193–201 km/h) in optimal conditions.
In 1980, Honda offered the CB650 as part of its mid-sized lineup. The bike used a 647cc inline-four engine and was tuned to deliver strong high-end performance while remaining practical for everyday riding. Contemporary road tests typically placed its top speed in the low-to-mid 120s mph range, with actual figures varying by gearing, aerodynamics, and rider setup.
Reported top speeds from the era
What testers measured and how
Road tests from the period provide the best evidence for the bike's performance. Below are representative figures from contemporary reviews and tests, noting that conditions and measurement methods varied.
- Cycle World (1980): top speed around 120 mph (193 km/h) in optimal conditions.
- Motorcyclist (1980): top speed around 122 mph (approximately 197 km/h).
- Other 1980-era tests cited speeds near 125 mph (about 201 km/h) in unrestricted runs.
Test conditions included stock tires, standard gearing, and the rider on the bike, sometimes with wind and altitude variances. The figures reflect real-world testing and are not official manufacturer claims.
What influenced the top speed?
Key factors that affected measured performance
Several factors determined the observed top speed in tests and real riding, including:
- Engine power and gearing: horsepower and the final-drive ratio control speed potential.
- Aerodynamics: fairing design and rider posture affect drag at high speeds.
- Weight and handling: overall mass and balance influence acceleration and stability near the limit.
- Tire performance and wind: grip, rolling resistance, and crosswinds can limit peak speed and stability.
Differences among regional market versions (US, Europe, Japan) could also lead to small variations in gearing or exhaust tuning that subtly impacted top speed.
Additional context
The CB650 was designed as a nimble middleweight with strong midrange torque. While it did not have the full-bore power of the larger CB750, its 647cc four-cylinder engine offered brisk acceleration and a high-speed potential that appealed to riders in 1980. The top-speed figures from tests reflect the era's engineering and measurement practices.
Summary
Across credible period sources, the 1980 Honda CB650's top speed was typically reported in the 120–125 mph range under ideal conditions, with real-world results depending on gearing, aerodynamics, rider weight, and environmental factors.
What is the top speed of the 1979 Honda CB650?
By producing 63 hp at 9,000 rpm and 38 pound-feet (52 Nm) of torque at 8,000 spins, the mill enables its bearer to reach a top speed of 113 mph (182 kph). The oomph travels to the rear 17-inch Comstar hoop by means of a chain final drive.
How fast can a CB650 go?
about 130 mph
The CB650r has a type of top speed governor that restricts air flow at about 130 mph. You can probably bypass it if you feel the need.
How much horsepower does a 1980 CB650 have?
63 hp
The CB650 produced a claimed 63 hp (47 kW) @ 9,000 rpm. In 1980, the CB650 was re-styled but there were no significant mechanical changes.
What was the fastest motorcycle in the 80's?
Kawasaki GPZ900R Ninja
Fastest production motorcycles
| Make & model | Model years | Top speed |
|---|---|---|
| Kawasaki GPZ900R Ninja | 1984–1996 | 151–158 mph (243–254 km/h) |
| Honda VF1000R | 1984–1988 | 150 mph (240 km/h) |
| Laverda Jota | 1976–1981 | 140–146 mph (225–235 km/h) |
| Ducati 900SS | 1975–1982 | 135 mph (217 km/h) |