Ducati 250 Mark 3D Desmo (1973)

Ducati 250 Mark 3D Desmo (1973)

Ducati’s 60s struggles gave way to innovation with the introduction of their “wide-case” single engine in 1967, paving the way for the iconic Ducati 250 Mark 3.

This revolutionary bike boasted a revised crankcase design, wider at the rear where it mounted the frame, and an increased sump capacity of 2.5 Litres.

With its potent 249 cc SOHC single engine paired with a five-speed transmission, the 1970 250 Mark 3 delivered exceptional performance.

The bike’s character shone through in its strong kick-start, new rear frame section, and sleek, streamlined design, making it a standout in the market.

Key Specifications

Engine TypeFour stroke, single cylinder, Desmo SOHC, bevel gear driven
Engine Capacity248.6 cc / 15.2 cu in
Max Power16.4 kw / 22 hp
Fuel Tank Capacity13 L / 3.4 US gal / 2.9 Imp gal
Seat Height28.9 inches / 735 mm
Ducati 250 Mark 3D Desmo (1973)

All Specifications

Make & Model

ModelDucati 250 Mark 3D Desmo
Year1973

Engine

Engine TypeFour stroke, single cylinder, Desmo SOHC, bevel gear driven
Displacement248.6 cc / 15.2 cu in
Bore x Stroke74 x 57.8 mm
Compression Ratio10.0:1
Max Horsepower16.4 kw / 22 hp
Engine Management SystemDell’Orto SS1 29D carburetor
Cooling SystemAir cooled

Performance

Top Speed150 km/h / 93 mph

Transmission

Gearbox5 Speed
Primary Drive Ratio2.500:1
Gear Ratios1st 2.46 / 2nd 1.73 / 3rd 1.35 / 4th 1.10 / 5th 0.97:1
Final DriveChain

Electrical & Electronics System

BatterySAFA 3L3 13.5 Ah
StarterKick

Chassis & Suspension

Front SuspensionHydraulic fork, Ducati 31.5 mm
Rear SuspensionSwingarm, Marzocchi dual shocks, 3-way adjustable

Wheels & Brakes

Front Tire Size2.75-18
Rear Tire Size3.00-18
Front Brakes180mm Drum
Rear Brakes160mm Drum

Dimension & Weights

Overall Length2000 mm / 78.7 in
Overall Width600 mm / 23.6 in
Overall Height940 mm / 37.0 in
Seat Height28.9 inches / 735 mm
Wheelbase53.5 inches / 1360 mm
Fuel Tank Capacity13 L / 3.4 US gal / 2.9 Imp gal
Dry Weight127 kg / 280 lbs

Features

  • Single engine architecture with overhead-camshaft design
  • Revised crankcases wider at rear for frame mounting
  • Increased sump capacity to 2.5 Litres
  • Stronger kick-start mechanism
  • Rear frame section revised for improved strength and stability
  • 249 cc displacement single cylinder engine
  • Five-speed transmission
  • Single filler fuel tank
  • Speedometer mounted on top triple clamp
  • Tachometer mounted on top triple clamp
Ducati 250 Mark 3D Desmo (1973)
Ducati 250 Mark 3D Desmo (1973)
Ducati 250 Mark 3D Desmo (1973)

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