1982 CB650SC’82 Nighthawk 650
| Engine Type | 627cc SOHC 2-valve inline four cylinder | 
| Exhaust | 4-into-4 | 
| Valve adjusters | screen-type | 
DRIVETRAIN | 
|
| Transmission | 5-speed | 
| Clutch | Cable operated | 
| Final drive | Chain | 
OTHER | 
|
| Colors | 
  | 
- The headlight and instruments were round
 - The frame color was the basic color (blue or black)
 - The stripe was chrome
 - The serial number began JH2RC080*CM000013.
 
1983 CB650SC’83 Nighthawk 650
Engine | 
|
| Engine Type | Completely new 655cc, DOHC inline four-cylinder | 
| Power | 72 horsepower | 
| Valve train | Hydraulic Valve Adjuster system | 
| Oil | Oil cooler | 
| Compression Ratio | 9.5:1 | 
| Exhaust system | 4-into-2 | 
| Starter Type | Electric Pushbutton | 
DRIVETRAIN | 
|
| Transmission | 6-speed | 
| Drive | Shaft | 
| Clutch | Self-adjusting Hydraulic | 
CHASSIS / SUSPENSION / BRAKES | 
|
| Suspension | TRAC™ | 
| Front Tire | 100/90 � 19 | 
| Rear Tire | 130/90 � 16 | 
| Front Brakes | Dual discs with twin piston calipers | 
| Rear Brakes | Expanding brake (drum brake). single-leading-shoe rear brake | 
DIMENSION | 
|
| Seat height | 777 mm(31.1 in.) | 
| Wheelbase | 1460mm (57.5 in) | 
| Fuel capacity | 13 liters (3.4 gal.) | 
| Weight | 197 kg (434.3 lb) | 
| Length | 1460mm (57.5 inches) | 
OTHER | 
|
| Color | 
  | 
- The headlight and instruments were rectangular
 - The forks had the “TRAC” anti-dive system
 - The emblem was located above the axle
 - The speedometer numbers were marked in increments of 10 (i.e, 10, 20, 30, 40, etc.)
 - The serial number began JH2RC130*DM000034
 
1984 CB650SC’84 Nighthawk 650
Engine | 
|
| Engine Type | 655cc | 
| Valves | 16-valve hydraulic valve adjuster system | 
| Power | 72 hp | 
DRIVETRAIN | 
|
| Transmission | Five-speed plus overdrive sixth | 
| Drive | Shaft | 
DIMENSION | 
|
| Wheelbase | 1460mm (57.5 in) | 
| Seat height | 790 mm(31.1 in.) | 
| Weight | 197 kg (434.2 lb) | 
OTHER | 
|
| Colors | 
  | 
- The “TRAC” fork emblem was located below the axle.
 - The serial number began JH2RC130*EM100001
 
1985 CB650SC’85
- ENGINE
- N/A
 
 - DRIVETRAIN
- N/A
 
 - CHASSIS / SUSPENSION / BRAKES
- N/A
 
 - DIMENSION
- N/A
 
 - OTHER
- Colors:
- Candy Scorpio Red
 - Candy Empire Blue
 
 - The “NIGHTHAWK 650” side cover logo was in block letters
 - The speedometer numbers were in increments of 10 (i.e., 15, 25, 35, 45, etc.)
 - The serial number begins JH2RC130*FM200001
 
 - Colors:
 









