Belt-driven bicycle with a compact design that, like STRiDA, featured a belt drive. Other folding-bike manufacturers that have implemented a belt drive include U.S. company Bike Friday and Netherlands-based Bernds. In 2007, Gates Corporation developed a high-modulus synchronous belt and sprocket system called the Carbon Drive System. The belt’s pitch allowed for lower tension requirements to help prevent skipping. Lightweight, patent-pending sprockets have mud ports, openings under each tooth, which work to slough off debris. In 2009, an increasing number of bicycle companies, including Trek and "f"8 Cycles, offered belt-driven bicycles. While builders initially focused on single-speeds and internal hubs, in early
Specialized Bicycle Components models. An original Stumpjumper is displayed in the Smithsonian Institution in Washington, D.C. In 1989, Specialized introduced the Epic, the world's second mass-production carbon fibre mountain bike. In the early 1990s, Specialized introduced the Globe line of urban bikes. The line was the subject of a major relaunch in 2009, which saw Globe become its own distinct brand. The Globe brand has since been discontinued, and Specialized now markets "lifestyle" bikes under its main brand. In 1995, Specialized launched the Full Force brand. Full Force was a lower-end mountain bike brand sold through sports stores and discount retailers such as