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Sport Tourers

1984Honda CB 650 SC Nighthawk

★ 4.7
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The 1984 Honda CB 650 SC Nighthawk is a versatile sport-touring middleweight designed for riders seeking a balanced blend of performance and practicality. Powered by a reliable 655cc inline-four engine producing 63 horsepower, it delivers smooth acceleration and dependable handling, making it ideal for both commuting and weekend rides.

Capacity
655.0 ccm
Engine
In-line four
Gearbox
6-speed
Dry weight
197.0 kg
Seat height
790 mm
Power
63.0 HP (46.3 kW)
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What’s new for the 1984 Honda CB 650 SC Nighthawk

vs the 1983
Spec19831984
Top speed — 175.0 km/h (108.7 mph)
Rear suspension two VHD shocks with four-way adjustable damping adustable daul shock
Front brakes Double disc. (2) 2- piston calipers, with TRAC system Double disc. daul disc twin piston calipers
Rear brakes Expanding brake (drum brake). single-leading-shoe rear brake Expanding brake (drum brake)
Cooling Oil & air Air
Other years 1983 1984

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 55Agility 58Comfort 68Off-road 5Touring 65Road manners 70
Off-road & trail5%
Cornering55%
City riding60%
Daily riding70%
Touring68%
Two-up65%
Track30%
Best for
Built as a shaft-driven sport tourer, this bike suits relaxed weekend rides and moderate-distance touring rather than outright performance riding.
Built for
It has a smooth, classic air-cooled inline-four character with linear power delivery and shaft-drive reliability rather than aggressive urgency.
Not ideal for
This is not the bike for riders seeking modern sportbike acceleration, aggressive cornering clearance, 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.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 790mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 1984 Honda CB 650 SC Nighthawk, with a cramped knee angle of around 85 degrees and a slightly forward riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine
Capacity
655.0 ccm
Power
63.0 HP (46.3 kW)
Engine type
In-line four
Power/weight ratio
0.3198 HP/kg (dry)
Bore x stroke
60.0 x 58.0 mm
Compression
9.5:1
Cooling system
Air
Fuel system
Carburettor
Starting
Electric
Ignition
Solid state
Valves per cylinder
4
Torque
Not on record - add it
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Shaft
Clutch
hydro activated clutch
Performance
Top speed
175.0 km/h (108.7 mph)
Dimensions & weight
Wheelbase
1461 mm
Overall length
2210 mm
Overall width
780 mm
Overall height
1171 mm
Seat height
790 mm
Dry weight
197.0 kg
Fuel capacity
12.90 litres
Ground clearance
145 mm
Oil capacity
2.50 litres
Reserve fuel capacity
1.90 litres
Chassis & suspension
Front suspension
Air-adjustable, leading-axle forks with dual Syntallic bushings
Rear suspension
adustable daul shock
Brakes & wheels
Front brakes
Double disc. daul disc twin piston calipers
Rear brakes
Expanding brake (drum brake)
Other
Color options
Red Black

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 19831984
Capacity 655 cc 655 cc
Dry weight 197 kg 197 kg
Seat height 790 mm 790 mm
Fuel capacity 12.9 L 12.9 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

4.7
★★★★★
Rider rating

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Common questions

What is the engine size of the Honda CB 650 SC Nighthawk?

The 1984 Honda CB 650 SC Nighthawk has a Capacity of 655.0 ccm (39.97 cubic inches).

What engine power does the Honda CB 650 SC Nighthawk have?

The 1984 Honda CB 650 SC Nighthawk has a Power of 63.0 HP (46.3 kW).

How many gears does the Honda CB 650 SC Nighthawk have?

The 1984 Honda CB 650 SC Nighthawk has a Gearbox of 6-speed.

How much does the Honda CB 650 SC Nighthawk weigh?

The 1984 Honda CB 650 SC Nighthawk has a Dry weight of 197.0 kg (434.3 pounds).

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