The Momentums unique filter-to-housing interface was built to feature the largest air filter possible. This aFe POWER Pro DRY S is a 9" tall, oil-free, 360-degree radial flow performance air filter 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 and light off-road use. The textured one-piece sealed housing, constructed of red cross-linked polyethylene (XLPE), is used to eliminate the use of an overabundance of parts and ensure the coolest air intake charge possible. A large, clear sight window allows for hassle-free filter inspection, without having to disassemble your system. An optional auxiliary air inlet pulls in additional cool air from the inner fender when under power. This system features a high quality, computer-designed, dyno-tuned intake tube to achieve maximum power gains while maintaining a perfect fit. Its XLPE material is heat soak resistant and extremely durable. Stainless-steel T-Bolt clamps and an injection molded coupling are included for strength and durability, while also providing the most secure installation available. Momentum GT intakes are designed with fewer parts and utilize factory mounting points for a fast and easy installation.