Achieve the maximum in airflow on race day with Airaid's race day air filters! The race day filters are designed and engineered to keep large debris out of the engine. These filters are constructed with sturdy polyurethane casings and a durable wire mesh screen, but are built without any filtration media. Airaid's race day filters are intended for race use applications only. They should only be used on a concrete or asphalt racing surface, such as a drag strip or road course.