aFe POWER Magnum FORCE Stage-2 Pro 5R Cold Air Intake System 15-19 BMW M3/M4 3.0LThese 6" tall 360 degree radial flow air filters feature our pre oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum performance. This media provides your engine with the largest amount of high flowing air and delivers the highest power gains in most cases, making it perfect for street and or track use. Their inverted top makes for more filter surface area, resulting in longer service intervals. The included high