A mounting system for an electronic device includes an outer section having an inner surface and an outer surface, the inner surface adapted to face the electronic device when the electronic device is mounted in the mounting system. A pair of opposed clamp pieces, that are formed as part of a step-support bracket provided to a vehicle body of a saddle-ride vehicle, are provided to sandwich an eccentric collar from both sides thereof in a radial direction. The inner flexible printed circuit can be bent and forms a protrusion offset from the outer flexible printed circuit. The scroll housing includes an air inlet for drawing air into the air filtration system and helmet, and at least one air outlet to distribute air flow to the air flow channel.