Featuring designs based on the legendary Knucklehead motorcycle ... friend showing off the pastel ringer T-shirts from the collection.Harley-Davidson Those aforementioned roots figure heavily ...

Harley-Davidson was one of the companies that lived long enough to see the light at the end of the tunnel, and that's all because of the El Knucklehead. Engineered by the man himself, William ...

It comes as no surprise, given the fact that the self-proclaimed Knucklehead will opt for a bike photoshoot in order to promote anything. He even sported a white Harley-Davidson t-shirt ...

The Knucklehead, an iconic Harley-Davidson model, boasts nostalgic charm and symbolizes the brand’s triumph over Indian Motorcycles in the 1930s. The innovative Knucklehead engine, featuring ...

thus birthing the Harley-Davidson EL 61 in 1936. Little did the company know, though, this motorcycle - affectionately called the "Knucklehead" - would become one of its most iconic products ever.

Unlike motorcycles, barn-found classic cars get a lot of attention today. But vintage bikes can be just as spectacular, especially Harley-Davidsons built before and around World War 2. Like this ...