means of a pivot shaft 52 through a pivot bore 54 and retained by pivot shaft nuts 56 the pivotal axis of the ski boot platform 22 is transverse to the longitudinal axis of the downhill ski boot 20 the ski boot platform 22 is illustrated in different pivotal positions in fig1 and 2 in order to keep the tail end of a ski from dangling downward as the ski boot 20 is raised from the snow resistance to pivotal motion is provided by means of resistance springs 58 mounted about the pivot shaft 52 interior to the forward rails 32 and engaging the toe piece 48 and the forward rails 32 referring to fig4 the stationary mount unit 50 is detachably installed into any ordinary downhill ski binding comprising the toe piece 48 and a heel piece 60 attached to and separated by a telescoping tube assembly generally identified by the reference numeral 62 the forward end of the toe piece 48 and the rearward end of the heel piece 60 are of astm standard shape so that they may be installed into any ordinary downhill ski binding the telescoping tube assembly 62 is constructed of a first tube 64 which is attached to the heel piece 60 and a second tube 66 interior to and engaging the first tube 64 and attached to the toe piece 48 the first tube 64 and the second.