This 6” tall 360-degree radial flow air filter features a 3.5" flange and our pre-oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum performance. It provides your engine with the largest amount of high-flowing air, usually resulting in the highest power gains out of all our filter media options. Its inverted bullet-style top makes for more filter surface area, resulting in longer service intervals. This media is perfect for street and/or track use. The smooth one-piece sealed housing, constructed of heat-resistant cross-linked polyethylene (XLPE) polymer, features our patent-pending filter-to-housing interface. Its innovative design minimizes the total number of parts, making for an easy installation. A large, clear sight window allows for hassle-free filter inspection, without having to disassemble your system. This system uses a ribbed bellows silicone intake tube for maximum flexibility and is ribbed to prevent vacuum collapse while maintaining a perfect fit. Stainless-steel clamps are included for strength and durability. A billet aluminum adapter allows you to retain the factory crankcase vent line. This is a direct bolt-on kit that requires no cutting or drilling on OEM parts.