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November 30, 2025
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Flathead (dec 30, 1929 – dec 31, 1935)
Description:
The 45-cubic-inch Flathead is introduced on the D model. Variations of this engine are found on H-D models as late as 1973.
Added to timeline:
A Brief History of Harley-Davidson’s Big Twin
By
Nathan Mack
8 Nov 2017
0
0
613
Date:
dec 30, 1929
dec 31, 1935
~ 6 years
Images:
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