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
Trek Bicycle Corporation made out of steel. Steel is an easier material to obtain and recycle. Also, Trek is starting to provide bike shops with funds to start recycling old tubes to be sent to Alchemy Goods in Seattle, Washington, to be made into bags, seat bags, and panniers. Bontrager branded products include helmets, tires, wheels, handlebars, stems, seatposts, saddles, electronics and cycling shoes, water bottles and other cycling clothing and accessories The relationship between Trek and Tour-de-France winner Greg LeMond went back to at least 1995 when LeMond licensed Trek to produce LeMond branded bicycles. According to Trek, "In 1999, the LeMond