Abstract: A snow flap for a snowmobile functions as a removable snow shovel blade. The handle may be used as a pivot attachment for the blade to the snowmobile and may be alternatively attached to the blade in a different orientation for use as a shovel. Quick release attachment of the blade to the rear of the snowmobile permits ease of use.

Abstract: A ventilating wheel provides a plurality of angled vanes extending from a hub. The ventilating wheel secures to the slide rail of a snowmobile suspension system. An endless track extends over the underside of the slide rail. A Hyfax may secure to the slide rail interposed between the track and slide rail to reduce friction therebetween. The ventilating wheel is in rolling contact with the track and is rotated thereby to draw air and snow over the slide rail. In some embodiments, air and snow flow over the radiator is induced. The ventilating wheel may serve as an idler wheel defining the shape of the track. In other embodiments, the ventilating wheel mounts to a straight portion of the slide rail and serves to reduce pressure on the Hyfax. In still other embodiments, the ventilating wheel serves only to increase air and snow circulation.