MTB Frame bike R 3D model

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A bicycle frame is the main component of a bicycle, onto which wheels and other components are fitted. The modern and most common frame design for an upright bicycle is based on the safety bicycle, and consists of two triangles: a main triangle and a paired rear triangle. This is known as the diamond frame.[1] Frames are required to be strong, stiff and light, which they do by combining different materials and shapes.