In the motorcycling world, there aren't a lot of names bigger than that of Harley-Davidson. Over the course of 120 historic years, Harley-Davidson Motorcycles has built some of the most powerful, iconic, and legendary motorcycles the world has ever seen. As such, the brand has rightfully earned its place in the two-wheeler hall of fame. In fact, Harley-Davidson is one of the strongest pillars of this hall of fame itself. Harley wouldn't have been the name it is today without some of the greatest, best-selling, and most impressive motorcycles over the course of their history, and these Harley motorcycles from the past are still just as important, not just to the American manufacturer, but motoring enthusiasts across the world.