| MODEL | DUCATI 250 MARK 3 1964 - 1967 |
| Year | 1964 - 1967 |
| Engine Type | Four stroke, single cylinder, Desmo SOHC, bevel gear-drive |
| Displacement / Capacity | 248.6 cc / 15.2 cu in |
| Bore X Stroke | 74 x 57.8 mm |
| Compression Ratio | 10:1 |
| Cooling System | Air cooled |
| Max Power | 22.4 kW / 30 hp @ 8000 rpm |
| Max Torque | — |
| Ignition | 6V 60W generator |
| Induction | Dell'Orto SS1 27A carburetor (1964); Dell'Orto SS1 29A carburetor (1965 onwards) |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | Wet, multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Single downtube, open frame with large diameter backbone tube |
| Front Suspension | Hydraulic telescopic fork, Ducati 31.5 mm |
| Rear Suspension | Swingarm, dual shocks, Marzocchi |
| Front Brakes | Drum, 180 mm |
| Rear Brakes | Drum, 160 mm |
| DIMENSION SPECS | |
| Overall Length | 2000 mm / 78.7 in |
| Overall Width | — |
| Overall Height | 1070 mm / 42.1 in (1965 onwards) |
| Seat Height | 750 mm / 29.5 in |
| Wheelbase | 1350 mm / 53.1 in (1965 onwards) |
| Ground Clearance | — |
| Dry Weight | 112 kg / 247 lbs (1965 onwards) |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.50-18 |
| Rear Tyre | 2.75-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 13 Litres / 3.4 US gal |
| Fuel Consumption | — |
| Top Speed | 177 km/h / 110 mph |
The narrow-case Mark 3 was a sports 250 single in the Mach 1 mould, with a bevel-driven SOHC engine and five-speed gearbox, but with more power at 30 hp. Contemporary testers found it fast and well-handling for its size, though suspension, vibration and the 6V electrics drew criticism. It was among the quickest bikes in its class in a period group test.
