Abstract: A trim component made of injection-molded plastic, including a substantially flat part directed along a reference plane, an internal face including at least one fastening mechanism, the fastening mechanism including a bridge of mid-plane, to support a clip and including two side walls opposite with respect to the mid-plane and joined together by a clip support wall. The side walls of the bridge includes, on their external faces, ribs, one end of which extends projecting from a plane defined by an edge of the side walls which is an opposite edge to the clip support wall, and is connected to the internal face of the trim component such that a space is created between the plane and the internal face of the trim component.