PURPOSE: To particularly advantageously form two raceways forming a plurality of indirect element bearing passageways, when providing the plurality of indirect element bearing passageways in a joint main body made of a composite material made of a thermosetting or thermoplastic reinforcing matrix, by using an injection molding die having at least one central core, and making metallic components cooperate with one another.

CONSTITUTION: A joint body 10 is molded using a central core 30 and components 14 and has bearing passageways distributed around the axis X-X of the body and each provided with two parallel raceways cooperating with indirect elements of a joint. The metallic components 14 are used to form the raceways and are longitudinally specified while each having a first flat surface 16 constituting the raceway and a projecting cylinder portion 18 cooperating with and having the same radius of curvature as the complementary recessed cylinder surface portion 20 of the joint body 10, and are horizontally specified by opposite lateral guide surfaces. The components 14 can move relative to the joint body 10 by pivoting about an axis Y-Y.