| MODEL | SUZUKI GS 450S 1980 |
| Year | 1980 |
| Engine Type | Four stroke, parallel twin cylinder, DOHC, 2 valves per cylinder |
| Displacement / Capacity | 448 cc / 27.3 cu in |
| Bore X Stroke | 71 x 56.6 mm |
| Compression Ratio | 9.0:1 |
| Cooling System | Air cooled |
| Max Power | 32.8 kW / 44 hp @ 9500 rpm |
| Max Torque | 36.3 Nm / 3.7 kgf-m / 26.8 lb-ft @ 8000 rpm |
| Ignition | Transistorized |
| Induction | 2 x 34 mm Mikuni BS34SS carburetors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 33 mm air-assisted forks |
| Rear Suspension | Dual shocks |
| Front Brakes | Single 272 mm disc |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 181 kg / 399 lbs |
| Wet Weight | 197 kg / 434 lbs |
| WHEEL SPECS | |
| Front Tyre | 3.00-18 |
| Rear Tyre | 3.50-16 |
| FUEL SYSTEM | |
| Fuel Capacity | 15 Litres / 4.0 US gal / 3.3 Imp gal |
| Fuel Consumption | 4.3 L/100 km / 23.4 km/l / 55 US mpg / 66 Imp mpg |
| Top Speed | 153 km/h / 95.3 mph |
The GS450S was the sporty, fairing-equipped version of the 1980 GS450 range, with a racer-style fairing, low bars and rear-set pegs in the European look. Under the skin it used the same bored-out GS400-derived twin. Reviewers liked the steering but found the soft suspension and emissions-era jetting held it back.
