The Vintage Motorcycles
Specialists in antique, classic, veteran and vintage motorcycles.
Specialists in antique, classic, veteran and vintage motorcycles.
Harley-Davidson is one of the most famous motorcycle manufacturers in history. Founded in Milwaukee, Wisconsin in 1903, the company quickly became one of the defining names of American motorcycling. For more than a century Harley-Davidson motorcycles have been associated with engineering innovation, long-distance touring, and a unique motorcycle culture that spread across the world.
Throughout its history Harley-Davidson produced a wide variety of motorcycles including early single-cylinder machines, powerful V-twin touring motorcycles, military motorcycles used during wartime, and modern cruisers. Many Harley-Davidson models are now highly collectible vintage motorcycles admired by enthusiasts and collectors worldwide.
This guide provides an overview of important Harley-Davidson motorcycle models, production years, and the engineering developments that shaped the brand.
| Model Series | Production Years | Engine Type | Capacity | Category |
|---|---|---|---|---|
| Single Cylinder Models | 1903-1918 | Single-cylinder | 400cc - 500cc | Early motorcycles |
| F-Head V-Twin | 1911-1929 | V-twin IOE | 880cc - 1000cc | Touring |
| Flathead Models | 1929-1973 | Side-valve V-twin | 750cc - 1200cc | Road |
| Knucklehead | 1936-1947 | OHV V-twin | 1000cc - 1200cc | Touring |
| Panhead | 1948-1965 | OHV V-twin | 1200cc | Touring |
| Shovelhead | 1966-1984 | OHV V-twin | 1200cc - 1340cc | Cruiser |
| Evolution (Evo) | 1984-1999 | OHV V-twin | 1340cc | Cruiser |
The first Harley-Davidson motorcycle was built in 1903 by William S. Harley and the Davidson brothers Arthur, Walter, and William. The early motorcycles were simple single-cylinder machines mounted in modified bicycle frames. These motorcycles used belt drive systems and basic carburetors but proved reliable enough to gain popularity among early riders.
By the early 1910s Harley-Davidson had already become one of the largest motorcycle manufacturers in the United States.
Production Years: 1911-1929
Engine Type: F-head V-twin (inlet over exhaust)
Displacement: approximately 880cc to 1000cc
In 1911 Harley-Davidson introduced its first V-twin engine design. This engine became one of the most important developments in the company's history. The V-twin layout produced more power and torque than earlier single-cylinder engines and became a defining characteristic of Harley-Davidson motorcycles.
Production Years: 1929-1973
Engine Type: side-valve V-twin
Flathead engines became widely used by Harley-Davidson during the early twentieth century. These engines were simple, durable, and well suited for long-distance riding.
Famous examples included the Harley-Davidson WL and WLA models, the latter of which became one of the most widely used military motorcycles during the Second World War.
Production Years: 1936-1947
Engine Type: overhead valve V-twin
Displacement: 61 cubic inches and 74 cubic inches
The Knucklehead engine marked a major technological advancement for Harley-Davidson. It introduced overhead valves and improved lubrication systems, which significantly increased engine performance and durability.
The distinctive rocker box shape of the engine gave rise to the nickname "Knucklehead", which remains one of the most famous engine designs in motorcycle history.
Production Years: 1948-1965
Engine Type: OHV V-twin
The Panhead engine replaced the Knucklehead after the Second World War. The design featured aluminum cylinder heads and improved oil circulation, which enhanced reliability and cooling.
Many classic Harley-Davidson touring motorcycles of the 1950s used the Panhead engine.
Production Years: 1966-1984
The Shovelhead engine was introduced during the 1960s and remained in production for nearly two decades. These motorcycles became closely associated with American motorcycle culture and the custom chopper movement of the 1960s and 1970s.
Many custom motorcycles built during the chopper era were based on Harley-Davidson Shovelhead engines and frames.
Production Years: 1984-1999
The Evolution engine represented a modern redesign of the traditional Harley-Davidson V-twin engine. Improved materials and manufacturing techniques made the engine more reliable while maintaining the classic appearance and sound associated with Harley-Davidson motorcycles.
Few motorcycle manufacturers have influenced global motorcycle culture as strongly as Harley-Davidson. The brand became associated with long-distance touring, American highway culture, and a strong sense of rider identity.
From early board-track racers to modern touring motorcycles, Harley-Davidson machines remain among the most recognizable motorcycles ever produced.
Harley-Davidson is a historic American motorcycle manufacturer and is featured in our guides to American vintage motorcycle brands as well as our complete overview of vintage motorcycle manufacturers by country, covering major global motorcycle industries from 1900 to 1980.
Indian, and Henderson, all of which played a major role in American motorcycle racing and engineering development.
Motorcycle enthusiasts and collectors looking for rare and classic machines can explore our vintage motorcycles for sale and discover a curated selection of historic and collectible bikes.
If you are restoring a historic motorcycle, you may also learn more about our motorcycle restoration services .
Explore more in-depth guides covering vintage motorcycle manufacturers, global brands, and vintage motorcycle history.