Ducati Ducat ST4 (1999-00) vs Suzuki GS 425E (1979)
Comparison technical specifications
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| Make: | Ducati | Suzuki |
| Model: | Ducat ST4 | GS 425E |
| Years: | 1999-00 | 1979 |
| Engine: | Four stroke, 90° “L” twin cylinder, DOHC, desmodromic 4 valves per cylinder | Four stroke, parallel twin cylinder, DOHC, 2 valves per cylinder. |
| Capacity: | 916 cc / 55.9 cu in | 423 cc / 25.8 cu in |
| Bore x Stroke: | 94 x 66 mm | 67 x 60 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 11.0:1 | 9.1:1 |
| Induction: | Fuel injection, 50 mm throttle body, Marelli 1.6M | 2 x 34 mm Mikuni carburetors |
| Starting: | Electric | Electric and kick |
| Max Power: | 78.7 kW / 107 hp @ 9000 rpm | 29.8 kW / 40 hp @ 7000 rpm |
| Clutch: | Hydraulically actuated dry multiplate clutch | Wet multiplafe |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Showa GD081 43mm upside-down fully adjustable fork. | Telescopic fork |
| Rear Suspension: | Progressive linkage with fully adjustable Showa GD082 monoshock with piggy back aluminum swing arm. | Twin shocks, coil spring over |
| Front Brakes: | 2x 320 mm Discs, 4 piston calipers | Single disc, 11in |
| Rear Brakes: | Single 245 mm disc, 2 piston caliper | Drum, 7 in |
| Front Tyre: | 120/70 - ZR17 | 3.00-18 |
| Rear Tyre: | 180/55 - ZR17 | 3.75-18 |
| Seat Height: | 820 mm / 32.3 in | 787 mm / 31 in |
| Dry Weight: | 214.5 kg / 474 lbs | 173 kg / 382 lbs |
| Fuel Capacity: | 21 Litres / 5.5 US gal / 4.6 Imp gal | 15 Litres / 4.0 US gal / 3.3 Imp gal |