Dual 4” Flange 360-degree radial flow air filters feature 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. This media is best suited for street use. Their inverted tops make for more filter surface area, resulting in longer service intervals. The dual air filters are surrounded by an open-element XLPE (cross-linked polyethylene) polymer housing that minimizes warm engine air for maximum performance. It is precisely designed and manufactured to fit perfectly into the factory mounting location. The housing connects to the factory air inlets on each side of the vehicle to capture the coolest air available. This system features a high quality, computer-designed, dyno-tuned intake tube to achieve maximum power gains while maintaining a perfect fit. The XLPE material is heat soak resistant and extremely durable. The seal trim installed on the housing edge seals to the plastic trunk cover to protect the air filters from unwanted warm engine air. This set up allows for more aggressive air intake noise while not sacrificing any performance. Premium stainless-steel clamps and flexible silicone couplings are used for strength and durability while also providing the most secure installation available.