Abstract: An anti-theft device made of welded steel material attached to the tail section of a snowmobile includes a U-shaped frame attached to the tail section of the snowmobile and includes a hollow sleeve extending vertically from the U-shaped frame. Spaced vertically above the U-shaped frame, attached to the hollow member, is a latch, an attachment bracket and an attachment plate. The pivotally mounted latch is biased to extend over one end of the hollow member for holding the lift bar in the hollow member. The attachment bracket is used to attach the device to a rear bumper of the snowmobile and the horizontally extending attachment plate is secured to the tail section of the snowmobile. A vertically extending lift bar is slidably mounted in the hollow member. The lift bar includes a groove defined in one side which is alignable with opposed openings in the hollow member.