This American naked sportbike family began in the mid-1990s as a stripped-back, performance-focused alternative to the more touring-oriented machines in the lineup. The first version arrived for the 1996 model year as the S1, establishing the formula of compact chassis packaging, aggressive ergonomics, and a distinctly Buell approach to street performance. In the late 1990s the line evolved into the X1 generation, which carried the same basic mission forward with updated chassis and fuel-injection-era refinement while remaining true to the original hard-edged character.
For the 2003 model year, the nameplate was carried into the XB platform, where the machine was reimagined around the company’s fuel-in-frame concept and shorter, more modern proportions. The XB era expanded the family into several related variants, including standard, low-seat, and long-wheelbase versions, as well as city-oriented and touring-leaning derivatives. That XB generation became the final and best-known chapter of the line, with production continuing through the 2010 model year.
Enthusiasts value this nameplate as one of the defining expressions of Buell’s idea of an American streetfighter: lightweight-feeling, mechanically distinctive, and focused more on road feel and character than on conventional sportbike formulas. It also serves as a clear timeline of the brand’s development, from the early Harley-Davidson-derived air-cooled era through the later XB redesign before Buell ended production in 2010.