| MODEL | DUCATI 350 MARK 3D 1974 |
| Year | 1974 |
| Engine Type | Four stroke, single cylinder, SOHC, bevel gear driven |
| Displacement / Capacity | 340.2 cc / 20.8 cu in |
| Bore X Stroke | 76 x 75 mm |
| Compression Ratio | 10.0:1 |
| Cooling System | — |
| Max Power | 17.7 kW / 24 hp @ 8500 rpm |
| Max Torque | — |
| Ignition | Electronic |
| Induction | Dell'Orto SS1 29D |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5-speed |
| Clutch | Wet, multiplate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 35 mm Marzocchi hydraulic telescopic fork |
| Rear Suspension | Swingarm, Marzocchi dual shocks, 3-way adjustable |
| Front Brakes | Single 280 mm disc |
| Rear Brakes | 160 mm drum |
| DIMENSION SPECS | |
| Overall Length | 2000 mm / 78.7 in |
| Overall Width | 600 mm / 23.6 in |
| Overall Height | 940 mm / 37.0 in |
| Seat Height | 735 mm / 29.0 in |
| Wheelbase | 1360 mm / 53.5 in |
| Ground Clearance | — |
| Dry Weight | 128 kg / 282 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.75-18 |
| Rear Tyre | 3.25-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 13 Litres / 3.4 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The final-year 350 Desmo gained a single 280 mm front disc and electronic ignition while keeping 6-volt electrics. A contemporary group test against the Honda CB360 and Kawasaki S3 praised its handling and feel, with a road-test top speed near 98 mph.
