| MODEL | HYOSUNG GT 650S 2004 - 2006 |
| Year | 2004 - 2006 |
| Engine Type | Four-stroke, 90° V-twin, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 647 cc / 39.4 cu in |
| Bore X Stroke | 81.5 x 62 mm |
| Compression Ratio | 11.4:1 |
| Cooling System | Liquid cooled |
| Max Power | 58.8 kW / 76.4 hp @ 9000 rpm |
| Max Torque | 68 Nm / 6.93 kg-m @ 7500 rpm |
| Ignition | Digital CDI |
| Induction | 38 mm carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 6-speed |
| Clutch | Wet, multiple discs, cable operated |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel, double pipe |
| Front Suspension | 41 mm upside-down oil forks |
| Rear Suspension | Swinging arm |
| Front Brakes | 2 x 300 mm discs |
| Rear Brakes | Single 230 mm disc |
| DIMENSION SPECS | |
| Overall Length | 2060 mm / 81.1 in |
| Overall Width | 740 mm / 29.1 in |
| Overall Height | 1125 mm / 44.3 in |
| Seat Height | 780 mm / 30.7 in |
| Wheelbase | 1435 mm / 56.5 in |
| Ground Clearance | — |
| Dry Weight | 195 kg / 429 lb |
| Wet Weight | 210 kg / 462 lb |
| WHEEL SPECS | |
| Front Tyre | 120/60-17 |
| Rear Tyre | 160/60-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 17 Litres / 4.5 US gal |
| Fuel Consumption | — |
| Top Speed | 203.8 km/h / 126.6 mph |
The GT 650S is the half-faired, upright-riding version of Hyosung's carburetted 650 V-twin, sharing its engine with the GT650R and the GV650 cruiser. Testers saw a strong resemblance to Suzuki's SV650 and noted a smooth, eager motor with tall gearing and good suspension, but soft front brakes and hard-to-read instruments. Its main selling point was a price below the Suzuki.
