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
Kawasaki (bicycle brand) Kawasaki (bicycle brand) Kawasaki is a brand of bicycle produced by various manufacturers from time to time since the 1970s. The bicycle types have included BMX, mountain, fatbikes, and e-bikes. Manufacturers have included Huffy, CGF Factory, and Diavelo. Promotion of the Kawasaki BMX brand included sponsoring BMX racing. Kawasaki BMX bicycles were welded by Triple-A Accessories in southern California in the 1970s. Frames were made from steel and aluminum with TIG and MIG welders. The frames had a rear suspension consisting of a swingarm supported by a spring on each side. The front fork was attached to the frame by