29er (bicycle) used were forks designed for trekking bikes or hybrids. For many years, 29" frames and bikes were usually only available from small little-known manufactures like Niner Bikes. Surly Bikes introduced their 29" frameset, the Karate Monkey, in 2002. Gary Fisher Bicycles, a division of Trek Bicycles, became the first of the major manufactures to offer a line of 29" bikes. Their lines never sold well until the introduction of single-speed 29" bike the Rig, in 2004. Today, most bicycle manufacturers in the US market offer at least one 29" bicycle or frame. Even companies that openly dismissed 29" as a
Belt-driven bicycle which allow riders of belt-driven bicycles to shift easily) are constantly innovating and introducing new designs such as the Shimano Alfine 11 and Fallbrook Technologies’s NuVinci. Other major internally geared hub makers include SRAM, Sturmey-Archer and Rohloff. Another option to provide gears is using a bracket-mounted gearbox like the Pinion P.18. manufacturers of belt-driven bicycles or belt drives include: Belt-driven bicycle A belt-driven bicycle is a chainless bicycle that uses a toothed synchronous belt to transmit power from the pedals to the wheel. The belts are typically made by the same manufacturing companies that produce timing belts for automobiles, machinery,