This air filter is designed with DNA®'s pioneering FCd (Full Contour design) design technology, which: Lets the pleated filter element follow the contour of the airbox precisely. Removes the dead spots that cause turbulence and cut power. Increases the air flow and the filtration efficiency, making use of the greater part of the filter's surface. FEATURES Fitting the filter is very easy - you can simply follow the instructions in the manual. It can hold a high percentage of dust, which means high filtration efficiency, reaching 98-99% (ISO 5011), with 4 layers of DNA® cotton. PERFORMANCE DNA filters are delivered pre-oiled from our factory with the right amount of DNA oil applied to each filter separately. The filter's air flow exceeds the factory filter by +62.21%. In more detail: - Factory filter air flow: 94.14 CFM (Cubic feet per minute) @1,5"H2O corrected @ 25degrees Celsius - DNA filter air flow: 152.70 CFM (Cubic feet per minute) @1,5"H2O corrected @ 25degrees Celsius The filter is designed for on & off road use It gives unrestricted air flow, a boost in torque and complete engine protection.