A wind-shielding device for motorcycles, particularly for modern sport-style motorcycles commonly termed, \u201csportbikes\u201d. The tile has eight IO signal pins forming a perimeter array, a central pin that can be either a ground pin or an IO power pin, and an offset ground pin. Also, the tab member is bounded by a slot formed between the slits on the second surface to establish a flange between the slot and the trailing edge. The motor operatively couples the support plates with respect to a trigger. Furthermore, support members are provided to support the portions of the separators at which the gas sealing members and the cooling surface sealing member are disposed so as to be offset with respect to each other as viewed in the stacking direction.