Ducati 250 Mach 1




Make Model.

Ducati 250 Mach 1


1964 - 66


Four stroke, single cylinder, Desmo SOHC, bevel gear-drive


248.6 cc / 15.2 cu in
Bore x Stroke 74 x 57.8 mm
Compression Ratio 10:1
Cooling System Air cooled


Dell'Orto SS1 29A carburetor


Battery and coil, 6V 60W generator

Spark Plug

Marelli CW260N


Max Power 20.6 kW / 28 hp @ 8500 rpm
Clutch Wet, multi-plate

Primary Drive Ratio



5 Speed

Gear Ratios

1st 2.53 / 2nd 1.73 / 3rd 1.35 / 4th 1.10 / 5th 0.97:1

Primary Drive Ratio

2.500:1 (24/60)

Final Drive


Final Drive Ratio



Single downtube, open frame with large diameter backbone tube

Front Suspension

Hydraulic telescopic fork, Ducati 31.5 mm

Rear Suspension

Swingarm, dual shocks, Marzocchi 295 mm, three-way adjustable

Front Brakes

Drum, 180 mm

Rear Brakes

Drum, 160 mm

Front Tyre

2.50-18 CEAT

Rear Tyre

2.75-18 CEAT


Length: 2000 mm / 78.7 in
Width:    590 mm / 23.2 in
Height:   920 mm / 36.2 in


1350 mm / 53.1 in

Seat Height

760 mm / 30.4 in

Dry Weight

116 kg / 255 lbs

Fuel Capacity

13 L / 3.4 US gal / 2.9 Imp gal

Top Speed

177 km/h / 110 mph

To truly grasp the rationale of Ducati production in the sixties and seventies one must look at the evolution of the single-camshaft single-cylinder engines and their division into “wide casings” and “narrow casings”.

Offspring of the Marianna, the Ducati single-cylinders quickly grew in capacity from 100 cc to 175 cc to the 250 cc of the Diana model. The Diana offered a great deal of pleasure to the motorcylists of the time, given that in ideal conditions (straight-through exhaust, choke wide open, and the rider in a head-down position), the bike could reach 140 km/h.

This sports bike was followed in 1965 by the even more aggressive Mach 1 250, a classic in its own time. For thousands of riders the Mach 1 was the world’s ultimate motorcycle. The engine was inspired by the renowned SOHC 175, and had a five speed gearbox (a real rarity at the time). It had a clean profile, with clip-ons, set-back footrests, and a narrow saddle – a great variety of sports

features when sports features were truly uncommon. Motociclismo magazine summed up the bike as follows, “The latest model from this illustrious brand is without a doubt one of the best sports 250’s available today, for its technical
features, style, and rideability. Particularly noteworthy are the powerful SOHC engine with five speed gearbox, powerful acceleration, excellent road handling, and efficient braking.”

Source: Ducati