The Honda CB550SC Nighthawk is a motorcycle produced in 1982, equipped with a four-stroke, transverse four-cylinder engine with a capacity of 572 cc. The bike features a Keihin CV induction system and a transistorized ignition, with a maximum power output of 75 horsepower at 9500 rpm and a maximum torque of 36.5 Nm at 8000 rpm. The hydraulic multi-plate wet clutch is paired with a six-speed transmission and a shaft-powered final drive.
The front suspension consists of a telescopic fork with a 160mm wheel travel, while the rear suspension features a swingarm with 104mm wheel travel. The bike has a 29.0-degree rake, 107mm trail, 1440mm wheelbase, and weighs 206.8kg with a fuel capacity of 12.1 Litres. The bike uses a single 320mm disc brake on the front and a 160mm drum brake on the rear, with a tire size of 100/90-19 in the front and 130/90-16 in the back. The consumption average of the bike is 41 miles per gallon, and it can reach a top speed of 186.6 km/h or 116 mph, with a standing 1/4 mile time of 12.6 seconds at 102 mph.
Technical specifications:
Make Model: Honda CB 550SC Nighthawk
| Year | 1982- |
|---|---|
| Engine | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Capacity | 572 cc / 34.9 cu-in |
| Bore x Stroke | 60 x 50.6 mm |
| Cooling System | Air cooled |
| Compression Ratio | 9.5:1 |
| Induction | 4x 30mm Keihin CV |
| Ignition | Transistorized |
| Starting | Electric |
| Max Power | 75 hp / 54 jW @ 9500 rpm |
| Max Torque | 36.5 Nm / 26.9 ft-lb @ 8000 rpm |
| Clutch | Hydraulic multi-plate wet clutch |
| Transmission | 6 Speed |
| Final Drive | Shaft |
| Front Suspension | Telescopic fork. 160mm wheel travel. |
| Rear Suspension | Swing arm, 104mm wheel travel. |
| Front Brakes | Single 320mm disc |
| Rear Brakes | 160mm Drum |
| Front Tyre | 100/90 -19 |
| Rear Tyre | 130/90 -16 |
| Rake | 29.0 degrees |
| Trail | 107 mm / 4.2 in |
| Wheelbase | 1440 mm / 56.7 in |
| Wet-Weight | 206.8 kg / 456 lbs |
| Fuel Capacity | 12.1 Litres / 3.2 US gal |
| Consumption average | 41 mpg |
| Standing 1/4 Mile | 12.6 sec / 102 mp/h |
| Top Speed | 186.6 km/h / 116 mph |
