| MODEL | DUCATI 350 MARK 3D 1969 - 1970 |
| Year | 1969 - 1970 |
| 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 | 9.5:1 |
| Cooling System | — |
| Max Power | 24.8 kW / 34 hp @ 8500 rpm |
| Max Torque | — |
| Ignition | Points and coil, 6V 30W generator |
| Induction | Dell'Orto SS129D |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5-speed |
| Clutch | Wet, multiplate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 31.5 mm Ducati hydraulic telescopic fork |
| Rear Suspension | Swingarm with twin Marzocchi shocks, 3-way adjustable |
| Front Brakes | 180 mm drum |
| Rear Brakes | 160 mm drum |
| DIMENSION SPECS | |
| Overall Length | 2000 mm |
| Overall Width | 600 mm |
| Overall Height | 940 mm |
| Seat Height | 735 mm |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 128 kg / 282 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.75-18 |
| Rear Tyre | 3.00-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 15 Litres / 4.0 US gal |
| Fuel Consumption | — |
| Top Speed | 170 km/h / 106 mph |
The desmo Mark 3D of 1969-70 moved to a black frame and a single-filler tank, and non-desmo versions lost their chrome in favour of silver paint. It was a high-revving, all-alloy single with a heel-and-toe gear lever, famed for a sudden power rush near 6500 rpm.
