Cool, high velocity air is pulled through the 360 degree breathing velocity cone air cleaner element. By passing more air into the engine, it is able to produce more horsepower. The engine also produces a well defined throttle sound. The bulky stock air box, some weighing as much as eight pounds, can now rest in your garage! There are thousands of these air cleaner systems on dozens of vehicle types in use world wide! Cooler inlet air temperature; increased cfm air flow; available with adapter ducts made from steel and heavy duty cast aluminum internal velocity cone; deep throttle sound; up to eight horsepower gain; permanent, reusable element.