1969 Ducati 250 Mark 3D

Specifications
- Category
- Sport
- Displacement
- 249.0 ccm (15.19 cubic inches)
- Displacement (cc)
- 249.00
- Engine details
- Single cylinder, four-stroke
- Power
- 20.0 HP (14.6 kW)) @ 8000 RPM
- Top speed
- 160.0 km/h (99.4 mph)
- Compression
- 9.7:1
- Valves/cyl
- 2.0
- Fuel system
- Carburettor
- Fuel control
- Desmodromic valve control
- Lubrication
- Wet sump forced lubrication with gear pump
- Cooling
- Air
- Gearbox
- 5-speed
- Transmission
- Chain (final drive)
- Frame
- Simplex open cradle tubular steel
- Front travel
- 120 mm (4.7 inches)
- Rear travel
- 70 mm (2.8 inches)
- Front tyre
- 2.75-18
- Rear tyre
- 3.00-18
- Front brakes
- Expanding brake (drum brake)
- Rear brakes
- Expanding brake (drum brake)
- Dry weight
- 131.0 kg (288.8 pounds)
- Seat height
- 735 mm (28.9 inches) If adjustable, lowest setting.
- Width
- 590 mm (23.2 inches)
- Fuel capacity
- 12.90 litres (3.41 US gallons)
The 1969 Ducati 250 Mark 3D
The Ducati 250 Mark 3D 1969 represented Ducati's small-displacement sport offering during the brand's transition from primarily single-cylinder machines to the twin-cylinder models that would define its future. This quarter-liter single delivered genuine performance for its era, with 20 horsepower pushing riders to nearly 100 mph — respectable figures that made it a proper stepping stone between entry-level bikes and larger sport machines.
The Mark 3D rewarded smooth, momentum-based riding rather than brute force acceleration. Its relatively tall gearing and modest fuel capacity made it better suited for spirited back-road sessions than long highway slogs, while the low seat height accommodated a wide range of riders. The single-cylinder engine required attention to technique, teaching throttle control and cornering discipline that bigger bikes could mask with power.
The 1969 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1968 example should focus on mileage, service history, and condition rather than spec differences.
Today's 250 Mark 3D attracts vintage Ducati collectors building comprehensive collections and newer riders seeking an authentic introduction to classic Italian sport bikes. The moderate collector interest reflects its historical significance without the pricing pressure of Ducati's more famous models.


