Gain 40-50 Rear Wheel Horsepower and 15-20 Rear Wheel Torque over the standard Whipple Air Filter. Supercharged engines have enormous airflow needs, and racers are constantly looking for a little something extra that will give them an edge over the competition. This Race Filter is designed strictly to keep large debris out of the engine. Constructed with sturdy polyurethane casings and a durable wire mesh screen, they are built without any filtration media. Race Filters are intended for race day only and should only be used on concrete or asphalt racing surfaces such as a drag strip or road course. These filters are not intended for street use and are not recommended for anything other than a controlled racing environment. • Greater horsepower and torque gains for racing • Wire mesh screen with no filtration media • Designed to eliminate air filter air flow restriction • Intended for asphalt/concrete racing surfaces only • Made in the USALearn More