Motors Through the Years

A brief pictorial essay of Harley-Davidson engines through the years. Here, in some of their glory, are the twins that made Milwaukee great.

small flathead
FLATHEAD
1929-73(!)
small knucklehead
KNUCKLEHEAD
1936-47
small panhead
PANHEAD
1948-65
small shovelhead
SHOVELHEAD
1966-84/85
small evo
EVOLUTION
1984-Present

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