Steering control system for snow vehicles, suitable for equipping vehicles like snowmobile type or more specifically of the standing snowmobile style (1), with a basic configuration of, at least, two front skis (4a, 4b) and one drive track (3). The system acts on one or the other ski independently, and depending of the chosen path left or right, the rider can activate the left ski system or the right ski system using a mechanism that can be manual or assisted. This swing arms system (5a, 5b) and rotating ski spindle (6a, 6b) allow an easy and stable lateral tilt of the snowmobile, and besides generate a multiple and simultaneous orientation on the ski (4a) or (4b). All these factors gives the snowmobile high maneuverability and efficient control of the trajectory.

A conversion kit for a snow vehicle has a front assembly component, the front assembly component has a front ski, a bracket that is attached to the front ski, two extension arms that are pivotally attached to the bracket extending upwardly from the front ski, and a rear assembly component having a two or more adjacent members, a mount attached to the pivot unit, comprising a clamping attachment on one end configured to retain a section of the frame on another end, a ski attachment terminating each adjacent member, a pivot unit, comprising at two horizontal pivot bars pivotally connecting the adjacent members at its ends, and pivotally connected to the mount at a midpoint, wherein the one or more horizontal pivot bars move the adjacent members interdependently, and wherein each member extends from a common pivot unit and terminates at a ski attachment.

A ski-attachable upright conveyance can have a swept-back handle, an upright frame, strengthening members, ski clamp attachments, a braking system, and a plurality of standing plates. The ski clamp attachments allow simple attachment to a variety of skis (skates, wheels, etc.) to form the base of the conveyance so that it can slide across snow, ice, etc. The standing plates provide a non-slip surface upon which a user places his/her feet, allowing the person to stand upright while operating the conveyance. A braking system can allow a user to safely control their speed, stop, etc. The upright frame sweeps upwards before joining the swept-back handle. The frame locks the ski clamp attachments together and provides rigidity. Additional rigidity and support can be added via strengthening support members. A user can vary the pressure and forces exerted on the swept-back handle to assist in steering.

Sliding device (1) for sliding on snow, whereby the sliding device (1) includes at least two skis (2) that extend in a longitudinal direction (L), whereby the at least two skis (2) are mounted next to one another and parallel to one another, whereby the at least two skis (2) are tiltable around separate horizontal axes of rotation (H) that are parallel to the longitudinal direction of the skis (2), whereby the sliding device (1) includes at least one support (7) that is rotatable around a vertical shaft (9), whereby the sliding device (1) is provided with a transmission (10, 11, 12) to convert a rotation movement of the support (7) around the vertical shaft (9) into a tilting movement of the skis (2) around their respective axes of rotation (H).