The X-Fifteen Lower Air Intake set is a replacement part designed to enhance airflow efficiency with the largest possible ventilation openings, keeping you cool and comfortable on your ride. This set allows you to replace the original chin ventilation unit or damaged vents and offers the option to customize your helmet with colored ventilation sliders for a personalized look. It includes two ventilation sliders, a visor button, a base plate, and three fastening screws for a complete and easy replacement.