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
Trek Bicycle Corporation Trek again expanded its worldwide headquarters in Waterloo, adding another to house its burgeoning engineering, R&D, and marketing departments. As part of the expansion, Trek included an atrium exhibit to display a number of historically significant bikes from Trek's family of brands, including one of the first mountain bikes ever built by Gary Fisher, and seven bikes used by Lance during his historic Tour de France run (one from each year, 1999–2005). After years of behind-the-scenes support for the League of American Bicyclists and the Bikes Belong Coalition, Trek announced its 1 World 2 Wheels bicycle advocacy campaign at its