Spectre's HPR (High Performance Racing) Universal cone air filters are designed to provide more horsepower and quicker acceleration by allowing more air flow into your engine than ordinary paper filters. These factory pre-oiled cone filters come ready to use and with multiple flange size and heights available. Manufactured using high quality materials including washable synthetic media, urethane and steel mesh, Spectre's HPR air filters are available in red, blue, black or white and feature a triple chrome plated steel or flat black top. These universal clamp-on air filters are easy to install with no special tools or skills required. Spectre s HPR (High Performance Racing) Air Filters are filters designed to provide more horsepower and quicker acceleration by allowing more air flow into your engine than ordinary paper filters.