1913

Parts Listings for Harley Davidson Motorcycles 1909 – 1932 Official Publication

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1912

First clutch mechanism

Parts Listings for Harley Davidson Motorcycles 1909 – 1932 Official Publication

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1911

Parts Listings for Harley Davidson Motorcycles 1909 – 1932 Official Publication

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1910

Parts Listings for Harley Davidson Motorcycles 1909 – 1932 Official Publication

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1909

First “V-Twin” engine

Parts Listings for Harley Davidson Motorcycles 1909 – 1932 Official Publication

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