These 6 tall 360-degree radial flow air filters feature a 3.5" flange and our oil-free Pro DRY S media with three layers of synthetic media for maximum convenience. Their progressive layering provides great filtration efficiency and dust holding capacity, while not requiring the use of oils. Their inverted top makes for more filter surface area, resulting in longer service intervals. This media is best suited for street use. Momentums innovative filter-to-housing interface was built to feature the largest air filter possible. Once the system is installed, the air filter can be easily removed from the housing for maintenance by uninstalling the intake tube. The smooth one-piece sealed housing, constructed of heat-resistant cross-linked polyethylene (XLPE), 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. The housing incorporates the factory air inlet scoop, using no additional hardware. This system features high quality, computer-designed, dyno-tuned intake tubes to achieve maximum power gains while maintaining a perfect fit. Its XLPE material is heat soak resistant and extremely durable. Stainless-steel clamps are included for strength, and premium silicone couplings are used for durability while also providing the most secure installation available. Aluminum and Nylon vacuum fitting are included for a perfect fit and finish. Momentum GT intakes are designed with fewer parts for a fast and easy installation.