Single-speed bicycle on the situation, a messenger may prefer a mountain bike based single-speed, which can roll over many obstacles, or a fast and light road bike-based single-speed. In the United States market, bicycle companies such as Bianchi, Cannondale, Fuji Bike, KHS, Kona, Raleigh, Giant, Specialized, Swobo, Felt, Trek and Niner all have produced and marketed single speed bicycles. Because most full suspension frame designs either have a single pivot that is not concentric with the bottom bracket, or a linkage with a variable center of rotation, the distance between the bottom bracket and rear axle varies throughout the suspension's travel. This
CCM (bicycle company) wheels. CCM (bicycle company) CCM was an initialism for Canada Cycle & Motor Co. Ltd. The company would eventually split into two separate entities both maintaining the CCM trademark, one maintaining bicycle manufacturing and the other, CCM (The Hockey Company), producing hockey equipment. The formation of C.C.M. came at the same time as an American bicycle industry consolidation: "42 manufacturers formed the American Bicycle Company and soon afterwards announced plans to open a branch plant in Canada called the National Cycle Company." C.C.M. was established "when the operations of four major Canadian bicycle manufacturers amalgamated: H.A. Lozier, Massey-Harris, Goold, and