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 performance enhancing substances". The complaint includes examples of Trek threatening its ties with LeMond in 2001 and 2004 after he made public statements against doping, Michele Ferrari, and Lance Armstrong Trek responded in April 2008 by suing to sever business ties with LeMond. Trek's press release said that "LeMond's suit was characterized by Burke as containing false and irresponsible allegations ". Burke also said "for years, Greg LeMond has done and said things that have damaged the LeMond brand and the Trek brand as a whole". . . . "His actions are inconsistent with our values—values we believe in and