These 6 tall 360-degree radial flow air filters feature a 3-1/2 round flange and our oil-free Pro DRY S media, with three layers of synthetic media for maximum convenience. The progressive layering provides great filtration efficiency and dust holding capacity, while not requiring the use of oils. This media is best suited for street and light off-road use. Their inverted bullet-style tops make for more filter surface area, resulting in longer service intervals. The smooth one-piece sealed housings, constructed of heat-resistant XLPE (cross-linked polyethylene) polymer, feature our patent-pending filter-to-housing interface. Two large, clear sight windows allow for hassle-free filter inspection, without having to disassemble your system. This system features high quality, computer-designed, dyno-tuned intake tubes to achieve maximum power gains while maintaining a perfect fit. Their XLPE material is heat soak resistant and extremely durable. It features a Takeda design inspired by import vehicles. Stainless-steel clamps and reinforced silicone couplings are included for strength and durability. Momentum intakes are designed with fewer parts for a fast and easy installation. The included barbed fitting allows the stock connection to transfer over seamlessly.