The Ducati Diana Mark 3 was a sports motorcycle also known as the Ducati Diana Super Sport. The bike was manufactured in 1962 as a replacement model for the Ducati Diana and produced until 1966 when it was replaced by the Ducati 250 Mark 3.
It was a higher-performance version of the Ducati Diana, powered by a 249cc single-cylinder bevel drive SOHC engine, and was sold only in the American market. In 1963, the bike was described by Cycle Magazin as the fastest and smoothest standard motorcycle in the 250cc class.
In 1962, the Italian motorcycle manufacturer launched the Ducati 250 Diana Mark 3, a sports machine fitted with standard elements, such as a round headlight up front, a large fuel tank, a one-piece dual seat with a passenger strap handle, side-mounted rear shocks, a single exhaust system, and wire-spoke wheels.
The bike's suspension system comprised a 31,5 mm telescopic fork on the front and a swingarm coupled to twin three-way-adjustable shock absorbers on the rear, providing optimum handling capabilities.
The braking performance was achieved by a 180 mm drum braking unit on the front wheel and a 160 mm drum unit on the rear wheel, offering optimum stopping performance.
As for the power figures, the 1962 Ducati 250 Diana Mark 3 had installed a 249cc four-stroke single-cylinder air-cooled engine underneath its fuel tank, boasting 20 hp with a peak force at 8,300 rpm.