Harley Engines

  • Facts and Information about the Harley Engines History
  • Useful guide to Harley Davidson products and merchandise
  • Products loved by both men and women!
  • Find out about the huge range of products for fans of these cool motor cycles
  • Facts and Information about the most famous motor cycles in the world!

Harley Engines History
Harley Davidson have utilised several motor cycle engines throughout their history. The very first bike produced was pedal assisted and only consisted of a small 116cc engine (1901). As this was not powerful enough to make it up the local hills in Milwaukee, a larger and improved engine (405cc) was used in the next design. Functional by 1904, this model (boasting a one cylinder engine) took part in a State Fair park motorcycle race September that year. Although it was a lot more powerful than the initial engine, the bike only achieved fourth spot. Interested in the racing history of Harley Davidson?

Harley Davidson Engines – One Cylinder
The one cylinder Harley Davidson engines were used from 1903. Up until 1905 the 27.4” F-head engine was used in Harley Davidson motorcycles, between 1906-08 it was a 26.8” F-head engine, 1909-12 a 30” flathead engine, 1913-18 a 35” flathead engine, 1921-23 a 37” flathead engine, 1926-29 a 21“ over head valve engine, 1926-34 a 21” flathead engine, 1929-34 a 30.5” flathead engine, 1947-65 a hummer engine and 1960-65 a Topper engine. The F-head engines had a one valve arrangement for internal combustion and should not be confused with the more common Flathead engines.

Harley Davidson Engines – Big V Twin
The Big V Twin Harley Davidson engines were used from 1914. The F-head IOE (intake over exhaust) engines were used until 1929 (1000 and 1200 cc) and the Flathead engines between 1930-48 (1200 and 1300 cc). Knucklehead engines were used from 1936-47 (1000 cc and 1200 cc), the Panhead from 1948-65 (1000 and 1200 cc), the Shovelhead from 1966-85 (1200 and 1345 cc), the Evolution engine from 1984-2000 (1340 cc) and the Twin Cam engine from 1999 onwards (1450 (Fathead), 1550, 1584, 1690 (Touring models such as the Harley Davidson Road King Classic) and 1802 (CVO models) cc). Our high definition video below shows a number of different engine types!

Harley Davidson Engines – Sport
The Harley Davidson Sport engines were used from 1919. W Sport engines were used until 1923, the XA engine in 1942, the D engine from 1929-31 (750 cc), the R engine from 1932-36 (750 cc), the W V Twin engines from 1937-52 (750 cc), the G engines from 1937-73 (750 cc), the WR engines from 1941-52, the K engine from 1952-53 (750 cc), the KH from 1954-56 (900 cc), the KR from 1952-69, the Ironhead from 1957-85 (1000 cc), the XR engines from 1970 onwards and the Harley Davidson Evolution engine from 1986 onwards (883, 1100 and 1200 cc).

Harley Davidson Engines – Revolution
The Harley Davidson Revolution engines were used from 2002 onwards and are also known as water-cooled engines. The first of these engines was introduced in the V twin Racing Street Custom (VRSCA). A screaming Eagle version (1250 cc) was produced between 2005 and 2006 and became standard from 2008 for the whole VRSC line. Revolution engines are based on the VR-1000 superbike racing program. Classic Harley Davidson engines are V-twin, two-cylinder engines with the pistons based in a V (at 45 degrees). The way that these engines are designed makes the cylinders fire at different intervals, creating a high torque engine with a distinctive and unique Harley Davidson sound.
Custom Harley Engines

Thousands of people search to find out about these iconic bikes and their accessories. Even the logo, or emblem is iconic. We hope that you have found this article on Harley Davidson Engines a useful guide to Harley Davidson products and merchandise. You will find that this website is a great resource, whether you are looking to buy, sell or even rent a Harley Davidson motor cycle or purchase some products and accessories. Both men and women love this brand and the associated accessories. We have pictures and videos throughout our site so please take a look via our Index page.

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