The 1970s Harley-Davidson Motorcycles Channel features classic Harleys and their stories. Check out vintage Harley-Davidsons at HowStuffWorks.
The 1975 Harley-Davidson XL-1000 and XR-750 were often altered so few remain their original state. The engine for the XR-750 racer was based on the Sportster but it had dual carbs and high-mounted exhaust. Check out these rare powerful Harleys.