Abstract: A bicycle frame includes a body and a rigid or vertical suspension and an interchangeable triangular rear assembly. The body includes three pultruded profile sections interconnected by three overmolded housings made of a thermoplastic material comprising a semi-aromatic resin matrix. The interchangeable triangular rear assembly may be mechanically secured to the body via bosses and an output coupling. The frame has vibration damping properties. A method for making and assembling the same is also disclosed.