What category is the 1983 Honda CB 650 SC Nighthawk?

The 1983 Honda CB 650 SC Nighthawk has a Category of Sport touring.

What is the engine size of the 1983 Honda CB 650 SC Nighthawk?

The 1983 Honda CB 650 SC Nighthawk has a Capacity: of 655.00 ccm (39.97 cubic inches).

What type of engine does the 1983 Honda CB 650 SC Nighthawk have?

The 1983 Honda CB 650 SC Nighthawk has a Engine type of In-line four.

What is the engine power of the 1983 Honda CB 650 SC Nighthawk?

The 1983 Honda CB 650 SC Nighthawk has a Power of 63.00.

Is the 1983 Honda CB 650 SC Nighthawk air cooled or liquid cooled?

The 1983 Honda CB 650 SC Nighthawk has a Cooling system of Oil & air.

How many gears does the 1983 Honda CB 650 SC Nighthawk have?

The 1983 Honda CB 650 SC Nighthawk has a Gearbox of 6-speed.

How much does the 1983 Honda CB 650 SC Nighthawk weigh?

The 1983 Honda CB 650 SC Nighthawk has a Dry weight of 197.0 kg (434.3 pounds).

What is the seat height of the 1983 Honda CB 650 SC Nighthawk?

The 1983 Honda CB 650 SC Nighthawk has a Seat height of 790 mm (31.1 inches) If adjustable, lowest setting..

Honda CB 650 SC Nighthawk - 1983 Specifications and Reviews

Name: 1983 Honda CB 650 SC Nighthawk
Brand: Honda
Rating: 4.3 (3 reviews)

The 1983 Honda CB 650 SC Nighthawk is a sport-touring middleweight designed for riders seeking a balanced blend of performance and practicality. Its 655cc inline-four engine delivers smooth, reliable power ideal for both commuting and weekend rides. Best known for offering accessible sportiness with genuine versatility, it appeals to riders wanting a capable all-rounder without extreme sportbike commitment.

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General information
Category	Sport touring
Year	1983
Model	Honda CB 650 SC Nighthawk
Engine and Transmission Specifications
Clutch	wet, multi-plate clutch actuates hydraulically
Transmission typefinal drive	Shaft drive (cardan)
Gearbox	6-speed
Cooling system	Oil & air
Lubrication system	wet sump
Starter	Electric
Ignition	Solid state
Fuel control	DOHC
Valves per cylinder	4
Fuel system	Carburettor. Honda says 32mm; technically they are Keihin 29mm
Bore x stroke	60.0 x 58.0 mm (2.4 x 2.3 inches)
Compression	9.5:1
Max RPM	10000
Power	63.00
Stroke	4
Engine type	In-line four
Capacity:	655.00 ccm (39.97 cubic inches)

Physical measures and capacities
Wheelbase	1,461 mm (57.5 inches)
Seat height	790 mm (31.1 inches) If adjustable, lowest setting.
Dry weight	197.0 kg (434.3 pounds)
Honda CB 650 SC Nighthawk dimensions and frame
Exhaust system	4-2 double muffler
Rear brakes diameter	40 mm (1.6 inches)
Rear brakes	Expanding brake (drum brake). single-leading-shoe rear brake
Front brakes	Double disc. (2) 2- piston calipers, with TRAC system
Rear tyre dimensions	130/90-16
Front tyre dimensions	100/90-19
Rear suspension	two VHD shocks with four-way adjustable damping
Front suspension travel	39 mm (1.5 inches)
Front suspension	Air-adjustable, leading-axle forks with dual Syntallic bushings

Speed and acceleration
Power/weight ratio	0.3198 HP/kg
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Color options	Pearl Siren Blue and Candy Wineberry Red
Fuel consumption pr. 10 km (6.2 miles)	5.88 litres (1.55 gallons)
Reserve fuel capacity	1.89 litres (0.50 gallons)
Fuel capacity	12.86 litres (3.40 gallons)

Performance Profile & Rider Fit

63 hp

Peak Power

5.5s

0-60 mph

Best For

Track30%

City60%

Cornering55%

Daily Riding70%

Touring68%

Passenger65%

Rider Profile

Best For	A confident beginner or returning rider will feel comfortable, though the mid-size four-cylinder power delivery still rewards some prior riding experience.
Purpose	Built as a shaft-driven sport tourer, this bike suits relaxed weekend rides and moderate-distance touring rather than outright performance riding.
Rider Fit	The 790mm seat height and moderate 197kg dry weight make it approachable for riders of average height and build, with manageable low-speed handling.
Character	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.

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

Rider Fit Visualizer

1983 Honda CB 650 SC Nighthawk Rider Ergonomics Assessment

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Feet:

At 790mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 1983 Honda CB 650 SC Nighthawk, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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