Ducati 350 Mark 3D (1968-70)

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The Ducati 350 Mark 3D (1968-70) is a four-stroke, single cylinder, SOHC motorcycle with a capacity of 340.2cc / 20.8 cu in. It has a compression ratio of 9.5:1 and is powered by a Dell’Orto SS129D induction system, with ignition provided by points, coil, and a 6V30W generator. The bike has a Yuasa B38 12Ah battery and is started by kick. It can produce a maximum power of 24.8 kW / 34 hp @ 8500 rpm. The wet, multiplate clutch is connected to a 5-speed transmission with gear ratios of 1st 2.46 / 2nd 1.73 / 3rd 1.35 / 4th 1.10 / 5th 0.97:1.

The final drive of the Ducati 350 Mark 3D is via chain and has a ratio of 3.214:1. The motorcycle has a front suspension of 31.5mm Ducati telescopic hydraulic fork, and a rear suspension consisting of a swingarm with twin Marzocchi shocks that are 3-way adjustable. The front and rear brakes are 180mm and 160mm drums, respectively. The front and rear tires are 2.75-18 and 3.00-18 respectively.

The bike measures 2000 mm / 78.7 in in length, 600 mm / 23.6 in in width, and 940 mm / 37.0 in in height, with a seat height of 735 mm / 28.9 in. The dry weight of Ducati 350 Mark 3D is 128 kg / 282 lbs and has a fuel capacity of 15 liters / 4.0 US gal / 3.3 Imp gal. The motorcycle can reach a top speed of 170 km/h / 106 mph.

Technical specifications:

Make Model: Ducati 350 Mark 3

Year: 1968-70


Engine: Four stroke, single cylinder, SOHC, bevel gear driven
Capacity: 340.2cc / 20.8 cu in
Bore x Stroke: 76 x 75 mm
Compression Ratio: 9.5:1
Induction: Dell’Orto SS129D
Ignition: Points, coil, 6V30W generator
Battery: Yuasa B38 12Ah
Spark Plug: Marelli CW260N / Lodge 2HN
Starting: Kick
Max Power: 24.8 kW / 34 hp @ 8500 rpm
Clutch: Wet, multiplate
Primary Drive Ratio: 2.111:1
Transmission: 5 Speed
Gear Ratios: 1st 2.46 / 2nd 1.73 / 3rd 1.35 / 4th 1.10 / 5th 0.97:1
Final Drive: Chain

Final Drive ratio: 3.214:1
Front Suspension: 31.5 mm Ducati telescopic hydraulic fork
Rear Suspension: Swingarm, Twin Marzocchi shocks, 3-way adjustable
Front Brakes: 180 mm Drum
Rear Brakes: 160 mm Drum
Front Tyre: 2.75-18
Rear Tyre: 3.00-18
Dimensions: Length: 2000 mm / 78.7 in Width: 600 mm / 23.6 in Height: 940 mm / 37.0 in
Seat Height: 735 mm / 28.9 in
Dry Weight: 128 kg / 282 lbs
Fuel Capacity: 15 Litres / 4.0 US gal / 3.3 Imp gal
Top Speed: 170 km/h / 106 mph

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