| General information |
| Model: | Honda CB 550 SC |
| Year: | 1983 |
| Category: | Allround |
| Engine and transmission |
| Displacement: | 572.00 ccm (34.90 cubic inches) |
| Engine type: | In-line four |
| Stroke: | 4 |
| Power: | 75.00 HP (54.7 KW)) @ 9500 RPM |
| Torque: | 36.50 Nm (3.7 kgf-m or 26.9 ft lbs) @ 8000 RPM |
| Max RPM: | 10000 |
| Bore x Stroke: | 60.0 x 50.6 mm (2.4 x 2.0 inches) |
| Fuel system: | Carburettor. Keihin CV 26.8mm |
| Valves per cylinder: | 4 |
| Fuel control: | DOHC |
| Starter: | Electric |
| Cooling system: | Air |
| Gearbox: | 6-speed |
Transmission type final drive: | Shaft drive (cardan) |
| Physical Measurements |
| Weight incl. oil, gas, etc: | 206.8 kg (456.0 pounds) |
| Wheelbase: | 1,440 mm (56.7 inches) |
| Chassis and dimensions |
| Frame type: | Conventional steel frame |
| Rake (fork angle): | 29.0� |
| Trail: | 107 mm (4.2 inches) |
| Front Suspension: | Air-adjustable |
| Front brakes: | Single disc |
| Rear brakes: | Expanding brake (drum brake) |
| Exhaust system: | Double chrome pipes |
| Speed and acceleration |
| Top speed: | 186.7 km/h (116.0 mph) |
| 1/4 mile (0.4 km): | 12.640 seconds |
| 60-140 km/h (37-87 mph), highest Gear: | 10.800 seconds |
| Other specifications |
| Fuel capacity: | 12.11 litres (3.20 gallons) |
| Reserve fuel capacity: | 1.89 litres (0.50 gallons) |
| Fuel consumption pr. 10 km (6.2 miles): | 4.90 litres (1.29 gallons) |
| Comments: | This 550 Nighthawk, then, is a combination of glitter and glitz and solid function, providing a base of performance under all that style and chromed plastic. It�s proof that motorcyclists can have it both ways, not giving up power for the cruiser look. |