Large Five Layer Performance Air Filter:_x000d_Momentum's innovative filter-to-housing interface was built to feature the largest air filter possible. This 9" tall 360-degree radial flow air filter features our pre-oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum performance. It provides your engine with the largest amount of high-flowing air and delivers the highest power gains in most cases. This media is perfect for street use. Its inverted top makes for more filter surface area, resulting in longer service intervals.

Product Features:

• Washable and Reusable Pro 5R Air Filter for Maximum Performance
• Durable XLPE Construction and Sealed Housing Protects From Impact, Extreme Temperatures, and Other Elements
• Clear Sight Window for Convenient Filter Inspection Without Disassembly
• Optional Auxiliary Air Inlet for Maximum Air Flow