The Harley-Davidson Sportster is classified as a cruiser motorcycle. Cruiser motorcycles are known for their laid-back riding positions, low seat heights, and V-twin engines. They are designed for relaxed and comfortable riding, often emphasizing style and aesthetics. The Sportster models typically feature classic styling elements, such as a teardrop-shaped fuel tank, wire-spoke wheels, and a minimalist design. While the Sportster is considered a cruiser, it has also been used as a base for customizations, allowing riders to create a wide range of styles and looks based on their preferences.