Abstract: The present invention relates to a heel elevator device for a ski (120), wherein the heel elevator device (100) is adapted for being fixed to the ski (120) and adapted for connecting a plate element (108) to the ski (120), wherein the plate element (108) comprises a ski binding or a sole of a ski boot. The heel elevator device (100) comprises a supporting element (102) with a supporting section (801), a gravity based positioning element (130) movably supported in the supporting element (102), and a force transmitting piston (805) with a piston engaging section (806). The force transmitting piston (805) is slideably attached to the supporting section (801) in such a way that, when an engagement force is exerted, the force transmitting piston (805) moves slideably into an engagement position. In the engagement position, the piston engaging section (806) is engaged with the gravity based positioning element (130) for fixing the gravity based positioning element (130).