In 1901 William S. Harley, only 22 years old at the time, designed a motor to use on a regular bicycle frame.
William and his friend, Arthur Davidson, spent the next two years making that design a reality.
That was just the beginning, and these two friends went on to build bigger and better bikes.
By 1920, Harley-Davidson was the largest motorcycle manufacturer in the world.
Around this time, a team of Harley-Davidson riding farm boys were on a winning streak.
They began using a hog as their mascot and would perch the pig on the bike for a victory lap after each win.
In 1921, a Harley-Davidson, ridden by Otto Walker, was the first motorcycle ever to win a race at an average speed of over 100 mph.