A connector element for connecting frame parts at a joint location in a
bicycle frame is made of a single part of structural fiber based
material, typically carbon fiber material, after reticulation in a mold
exploiting the expansion of a core on which windings of fiber fabric
material are provided, to obtain the application of a uniform radial
pressure on the layers of fiber based material. In one embodiment, the
connector element defines a bicycle bottom bracket and tubular extensions
extending therefrom for connection to elements of the bicycle frame.