Harley-Davidson Information

The Harley-Davidson Motorcycles Channel includes histories, photos and specs for Harley-Davidson motorcycle models. Explore Harleys on HowStuffWorks.

The 1936 Harley-Davidson EL motorcycle introduced the famous Knucklehead engine to the Harley line. It became one of the most popular Harley-Davidson models of all time. See pictures and learn more about the Harley EL.

The 1938 Harley-Davidson UL motorcycle featured a Flathead V-twin instead of the newer Knucklehead. It was a Sport Solo model with new colors and striping available. See pictures and learn about the Harley UL.

The 1942 Harley-Davidson WLA motorcycle and Harley-Davidson XA motorcycle were weapons of World War II. Wearing the requisite Olive Drab paint, these were 45-cubic-inch V-twins fitted with special wartime equipment. Learn about these Harleys.

The 1948 Harley-Davidson FL motorcycle introduced Harley's overhead-valve Panhead engine. More chrome trim pieces gave the bikes a fancier look and a steering-head lock was added. See pictures and learn about the Harley FL motorcycle.

The Harley-Davidson S-125 motorcycle was a popular civilian bike in the wake of World War II. Producing only three horsepower, the S-125 had a tough time reaching 55 miles per hour. See pictures and learn more about the Harley S-125.

The 1948 Harley-Davidson WL motorcycle was one of the last Harleys with a small V-twin. It proved to be a versatile engine that remained in production for more than four decades. See pictures and learn more about the 1948 Harley-Davidson WL.

It could be the distinctive body styling, or maybe it's that tellatale sound. There's just something about Harley-Davidson motorcycles that hundreds of thousands of folks can't resist. Find out all about this motorcycle icon.

There is no denying that a Harley-Davidson motorcycle has a unique sound. So makes a Harley sound different from other motorcycles?