1926 Harley Davidson JD, 74 ci. The company introduced 74-cubic-inch V-twins in 1922 and continued them with only minor changes through 1928. Some of those minor changes occurred in the JD: iron alloy pistons replaced the previous aluminum slugs, and 16 alemite fittings were added to the engine and gearbox to ease lubrication. Changes for this 1925 model included a new contoured seat, teardrop-shaped fuel tank and a change in location for the shift-lever, which was placed beside the fuel tank. Wheels were made wider, but smaller then in previous models. JD is early example of classic Harley Davidson motorcycle design. The price of the motorcycle was $335; Harley sold 9,506 of them.