Hubs are arguably the most important component on a bicycle. Every bicycle has them, no matter what size, type or purpose. The hub, together with the spokes and rim, form the complete wheel. Onto the wheel the tire and tube are mounted, along with gears on the rear wheel. Hubs provide the the support base for the spokes, which are adjustable for tension at the rim. While the rim and the spokes provide support for the tire and tube, the hub is what the entire bike frame rests on and how the weight of the bike and rider are transferred to the spinning interface of the wheel.
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