Ducati 250 Diana (1961-64) vs Suzuki GS 550L (1979-81)
Comparison technical specifications
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| Make: | Ducati | Suzuki |
| Model: | 250 Diana | GS 550L |
| Years: | 1961-64 | 1979-81 |
| Engine: | Four stroke, single cylinder, Desmo SOHC, bevel gear-driven | Four stroke, transverse four cylinders, DOHC, 2 valves per cylinder. |
| Capacity: | 248.6 cc / 15.2 cu in | 549 cc / 33.5 cu in |
| Bore x Stroke: | 74 x 57.8 mm | 56 x 55.8 mm |
| Compression Ratio: | 8.0:1 | 8.6:1 |
| Induction: | Dell'Orto UBF24BS carburetor | 4 x VM22SS Mikuni carburetors |
| Ignition: | 6V 40W generator | Battery and Coil |
| Starting: | Kick | Electric and kick |
| Max Power: | 14.4 kW / 19.5 hp @ 7550 rpm | 35.8 kW / 49 hp @ 9000 rpm |
| Transmission: | 4 Speed | 6 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Ducati 31.5 mm hydraulic telescopic forks | Telescopic fork, oil damped |
| Rear Suspension: | Swingarm, dual chocks, 3-way adjustable | Twin shocks, coil over, 5-way adjustable springload |
| Front Brakes: | 180 mm Drum | Single 275mm disc, 1 piston caliper |
| Rear Brakes: | 160 mm Drum | Drum |
| Front Tyre: | 2.75 -18 | 3.25-19 |
| Rear Tyre: | 3.00 -18 | 3.75-18 |
| Dry Weight: | 120 kg / 265 lbs | 195 kg / 430 lbs |
| Fuel Capacity: | 17 L / 4.5 US gal / 3.7 Imp gal | 17 Litres / 4.5 US gal / 3.7 Imp gal |
| Top Speed: | 140 km/h / 87 mph | 181 km/h / 112 mph |