RamAir's PRORAM performance replacement elements are a simple drop-in upgrade, designed to replace your standard OEM air filter inside your vehicle's air box, with a high performance, high flow element. No other modifications, parts or accessories are required. It features high flow, synthetic nanofibre filtration media, fits in the OEM Airbox and replaces the inefficient paper filter. The filter is washable for a lifetime of use and precision injection moulded for a perfect fit. It has guaranteed surface area using high-quality custom blended polymer. These PRORAM filters are manufactured using state-of-the-art precision injection moulding to ensure accurate dimensions and a superior fit. They are constructed from a high-flow synthetic nanofibre filtration media, which is pleated to maximise surface area and in turn increase performance.