Ducati 900 SS (1977) vs Ducati 500GTL (1979-81) vs Kawasaki KZ1100D Spectre (1982-83) vs Hyosung GT 650 FI (2009-10)
Comparison technical specifications
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| Make: | Ducati | Ducati | Kawasaki | Hyosung |
| Model: | 900 SS | 500GTL | KZ1100D Spectre | GT 650 FI |
| Years: | 1977 | 1979-81 | 1982-83 | 2009-10 |
| Engine: | Four stroke, 90°“L”twin cylinder, SOHC, 2 valves per cylinder, bevel gear driven | Four stroke, parallel twin cylinder, SOHC, chain driven, 2 valve per cylinder | Four stroke, transverse four cylinder, DOHC, 2 valve per cylinder. | Four stroke, 90° V twin, DOHC, 4 valve per cylinder |
| Capacity: | 864 cc / 52.7 cu in | 496.9 cc / 30.2 cu in | 1089 cc / 66.4 cu-in | 647 cc / 39.4 cu-in |
| Bore x Stroke: | 86 x 74.4 mm | 78 x 52 mm | 72.5 x 66mm | 81.5 x 62 mm |
| Compression Ratio: | 9.5:1 | 9.6:1 | 8.9:1 | 11.4:1 |
| Cooling System: | Air cooled | Air cooled | Air cooled | Liquid cooled |
| Induction: | 2 x Dell'Orto PHM 40 A, B or C carburetors | Dell'Orto PHF30BS/BD | 4x 34mm Mikuni constant-vacuum | Fuel Injection (include immobilizer) |
| Ignition: | Electronic | Points and coil | CDI | Digital CDI |
| Starting: | Kick (electric as an option) | Kick | Electric | Electric |
| Max Power: | 49.2 kW / 67 hp @ 7500 rpm | 25.7 kW / 35 hp @ 6500 rpm | 108 hp @ 8500rpm | 80.2 hp / 59 kW @ 9000 rpm |
| Clutch: | Wet, multiplate | Wet, multiplate | Wet, multi-plate | Wet, multiple discs, cable operated |
| Transmission: | 5 Speed | 5 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Shaft | Chain |
| Front Suspension: | 38 mm Marzocchi fork | 35 mm Paioli telescopic fork | 38mm Air assisted telescopic forks, 152mm wheel travel. | 41mm Oil upside down forks |
| Rear Suspension: | Marzocchi 310 mm dual shocks, 3-way adjustable | Swing arm, 2 x Marzocchi shocks, 3-way adjustable | Single air shock 4-way adjustable rebound damping, 102mm wheel travel | Swinging arm |
| Front Brakes: | 2 x 280mm Disc, 1 piston caliper | 2 x 256 mm Brembo discs | 2x 270mm discs 1 calipers | 2x 300mm discs |
| Rear Brakes: | Single 229 mm disc | Single 260 mm Brembo disc | Single 270mm disc 1 caliper | Single 230mm disc |
| Seat Height: | 760 mm / 29.9 in | 760 mm / 29.9 in | 760 mm / 30.0 In | 780 mm / 32.7 in |
| Fuel Capacity: | 20 L / 5.3 US gal / 4.4 Imp gal | 19 L / 5.0 US gal / 4.2 Imp gal | 21.4 Litres / 5.6 US gal | 17 Litres / 3.1 US gal |
| Top Speed: | 217 km/h / 135 mph | 175 km/h / 109 mph | 142 mph / 228 km/h | 187 km/h |