These 7" tall, 360-degree radial flow air filters were specially designed to be installed through the M5's strut braces, maximizing airflow and making for an easy installation. They feature our oil-free Pro DRY S media with three layers of progressively finer synthetic media for maximum convenience. This media is perfect for street use. The air filters are surrounded by heat-resistant XLPE polymer housings. Covers, constructed from 100% twill weave carbon fiber, are secured to the housings with premium aFe POWER branded hardware - making for an aggressive style and simple air filter inspection. Lightweight, high gloss, twill weave carbon fiber tubes direct filtered air from the air filters to the engine. Using computer design software and dyno tuning, they're designed to achieve maximum power gains while maintaining a perfect fit. This is a direct fit intake system that utilizes factory mounting points and requires no cutting or modifications. All necessary clamps, couplings, premium hardware, and a Black Series plate are included. Optional 100% carbon fiber Dynamic Air Scoops (sold separately P/N: 58-10005SC) are available to bring more cool air from the kidney grilles into the intake housings