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Harley-Davidson engine timeline

From CycleChaos
Harley-Davidson engines
Engine 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s
Light engines
S '48–'52
One-cylinder engines
27.4" F-head '03–'05
26.8" F-head '06–'08
30" F-head '09–'12
35" F-head '13–'18
37" F-head '21–'23
21" OHV '26–'29
21" flathead '26–'34
30.5" flathead '29–'34
Hummer '47–'65
Topper '60–'65
Big twin engines
F-head (IOE) '14–'29
Flathead '30–'48
Knucklehead '36–'47
Panhead '48–'65
Shovelhead '66–'85
Evolution '84–'99
Twin Cam '99–
Sport engines
W (opposed) '19–'23
XA '42
D '29-'31
R '32-'36
W (V twin) '37-'52
G (W engine) '37-'73
WR '41-'52
K '52–'53
KH '54–'56
KR '52–'69
Ironhead '57–'85
XR '70–
Evolution '86–
Water-cooled engines
Revolution '02–

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