Ducati 100 Gran Sport "Marianna" (1955-58) vs Ducati 125 Sport (1961-64)
Comparison technical specifications
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| Make: | Ducati | Ducati |
| Model: | 100 Gran Sport "Marianna" | 125 Sport |
| Years: | 1955-58 | 1961-64 |
| Engine: | Four stroke, single-cylinder, OHC, shaft and bevel gears, 31 mm inlet valve, 27 mm exhaust valve | Four stroke, single-cylinder, OHC, bevel gear driven |
| Capacity: | 99.66 cc / 6.08 cu in | 124.4 cc / 7.6 cu in |
| Bore x Stroke: | 49.4 x 52 mm | 55.2 x 52 mm |
| Compression Ratio: | 8.5:1 | 8.0:1 |
| Cooling System: | Air cooled | Air cooled |
| Lubrication System: | Forced oil sump | Forced oil sump |
| Induction: | Dell'Orto SS1, 20 mm | Dell'Orto UB20BS carburetor |
| Ignition: | Battery coil | Battery and coil, 6V 40W generator |
| Starting: | Kick | Kick |
| Max Power: | 6.7 kW / 9 hp @ 9000 rpm | 7.5 kW / 10 hp @ 8500 rpm |
| Clutch: | Wet, multi-plate | Wet, multi-plate |
| Transmission: | 4 Speed | 4 Speed |
| Final Drive: | Chain | Chain |
| Frame: | Single tube, open cradle frame in tubular steel | Single tubular downpipe cradle |
| Front Suspension: | Hydraulically damped telescopic forks | Hydraulically damped telescopic forks, Marzocci |
| Rear Suspension: | Swingarm, dual shocks | Swingarm, dual shocks, 3-way adjustable |
| Front Brakes: | Drum, Amadori | Drum |
| Rear Brakes: | Drum, Amadori | Drum |
| Front Tyre: | 2.75 -17 | 2.50 - 17 CEAT |
| Rear Tyre: | 2.75 -17 | 2.75 - 17 CEAT |
| Wheelbase: | 1250 mm / 49.2 in | 1320 mm / 52.0 in in |
| Dry Weight: | 80 kg / 176 lbs | 100.5 kg / 221 lbs |
| Top Speed: | 130 km/h / 81 mph | 112 km/h / 69 mph |