Abstract: A device (1) for mounting the components of a safety binding on a ski (2), comprising: a rigid platform (3) that extends over the entire length of the area in which the binding is mounted and comprises lateral slides (12); an elastomer element (4) that extends under the rigid platform (3) and is intended to come into contact with the upper surface of the ski (2); two limit stops (6) and (5), front and back respectively, that cooperate with the rigid platform (3) in order to restrict its longitudinal displacement; a rear plate (7) capable of accommodating the heel piece of the binding, said rear plate (7) being mechanically linked to the rigid platform (3) and secured on the board through retention elements (42, 44) that are directly fixed on the ski either side of the rigid platform (3).