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
Specialized Bicycle Components Choi and Forsman's attorney, Tyler Paetkau, that Specialized incurred more than $2M in legal fees to practice "competition by litigation." In September 2016, Volagi announced that it would close its doors after a founding member was injured in a bicycle accident involving an automobile. In 2013 Specialized mailed a small bike shop owner in Canada a cease and desist letter over its use of the city name Roubaix in its shop name and wheels, the name of a town in France that rose to prominence as a textile center in the 15th century and has hosted an iconic bicycle race