Harley-Davidson Sporster XLH 1959

After a series of intermediate models such as the K-twin introduced in 1952, as well as a new engine with a four-speed gearbox with pedal and manual clutch from the handlebar, it is finally time to show the XL Sportster.

Already in the name there is the change of pace in favor of a more aggressive model, finally competitive against the English 650 cc twin-cylinder engines. Its displacement is 883 cc (76.2 mm bore and 96.8 stroke), the combustion chamber has overhead valves instead of side valves, the clutch is dry and contained in a sealed space in the oil bath primary transmission crankcase. Heads and cylinders are made of cast iron while most of the competition (and even the Harley with the Panhead engine) has these details in light alloy, at least for the heads. The new twin-cylinder it has an output of 40 HP at 5,500 rpma compression ratio of 7.5: 1 and allows a top speed of 163 km / h.

More than showing itself as a true “sports car”, the XL tries to attract Harley riders who want big twins that are equipped with the 74 cubic inch (or 1,212 cc) Panhead engine, but cannot afford them. In the first year of sales, 1,993 are delivered and its price is $ 1,103.

The Sportster is liked for its much more toned engine and balanced line, which incorporates that of the previous KH versions, but is more cared for in detail. The headlight is leaning against a shiny plate, and to find a place in the marvelous nacelle, which also incorporates the speedometer-odometer and the service lights, it is necessary to wait until 1959.

The tank is two-tone, the fenders light in design and splash protection, and displays a new Milwaukee Brand emblem. In addition, to avoid making a mistake in the model, the left crankcase shows the name of the bike.

The presentation of the bike is accompanied by a advertising campaign aimed at enhancing its sporting character. Thus a series of slogans are used that emphasize performance: “Sensational and adrenaline-pumping bike”; “Powerful in mechanics, a true muscle bike”; “A thrilling guide”. Phrases with effect that enhance the new product from Milwaukee.

Hollywood stars are used, as well as Elvis Presley: the King of rock’n’roll is photographed riding a flaming red and white Sportster. On the wave of the sales success, we are working on continuous technical updates (higher compression ratio of 9: 1, larger diameter valves, new camshafts with a more stringent profile) and introduce racing models for flat track and desert rally racing such as the 1959 XLCHcharacterized by separate exhausts, magnet ignition and the typical peanut tank, which will then be used on the Sportster that will arrive up to the present day.