This 7” tall 360-degree radial flow air filter features a 4” round flange and our oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum airflow and performance. This media is best for street and track use. The included massive air filter is surrounded by an open-element XLPE (cross-linked polyethylene) polymer housing that pulls in air from the front of the vehicle and minimizes warm engine air, for maximum performance. Its open design allows for easy viewing of the air filter and closes the gap between the housing and hood, to keep away hot air from the air filter. It connects to the vehicle’s factory air inlet with no additional hardware. The lightweight tubes are computer-designed to achieve maximum power gains while maintaining a perfect fit. Manufactured from 100% twill weave carbon fiber, they feature zero fiberglass and are clear-coated for the highest quality construction. This intake is designed to use factory mounting locations, minimizing the use of unnecessary hardware, ensuring a perfect fit every time. Its revolutionary design, featuring our patent pending filter-to-housing interface, uses half the number of parts of a traditional cold air intake system. Track Series Stage-2 Carbon Fiber Intake System w/ Pro 5R Media BMW M2 (F87) 16-18 L6-3.0L (t) N55 BMW M2 (F87) 16-18 L6-3.0L (t) N55