Momentum’s unique filter-to-housing interface was built to feature the largest air filter possible. This 8 Inch tall 360-Degree radial flow air filter features a 4 Inch flange and our oil-free Pro DRY S media with three layers of synthetic media for maximum convenience. Its progressive layering provides great filtration efficiency and dust holding capacity, while not requiring the use of oils. This media is best suited for street use. Its inverted top makes for more filter surface area, resulting in longer service intervals, while reinforced metal provides maximum strength to prevent filter collapse. A clear sight window allows for hassle-free filter inspection, without having to disassemble your system. The housing connects to the factory air inlet duct but also captures air from the opening in the fender to provide more immediate cool air to the engine. 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. Stainless-steel clamps and silicone coupler are included for strength and durability. Momentum GT intakes are designed with fewer parts for a fast and easy installation.