| General information |
| Model: | Honda CB 450 S (reduced effect) |
| Year: | 1990 |
| Engine and transmission |
| Displacement: | 447.00 ccm (27.28 cubic inches) |
| Engine type: | Twin |
| Stroke: | 4 |
| Power: | 27.00 HP (19.7 KW)) @ 7000 RPM |
| Compression: | 9.1:1 |
| Bore x Stroke: | 75.0 x 50.6 mm (3.0 x 2.0 inches) |
| Valves per cylinder: | 3 |
| Fuel control: | OHC |
| Cooling system: | Air |
| Gearbox: | 6-speed |
Transmission type final drive: | Chain |
| Physical Measurements |
| Weight incl. oil, gas, etc: | 185.0 kg (407.9 pounds) |
| Chassis and dimensions |
| Front tyre dimensions: | 100/90-18 |
| Rear tyre dimensions: | 110/90-18 |
| Front brakes: | Dual disc |
| Rear brakes: | Expanding brake |
| Speed and acceleration |
| Top speed: | 141.0 km/h (87.6 mph) |
| Other specifications |
| Fuel capacity: | 18.00 litres (4.76 gallons) |