Fits directly into OEM airbox with application specific Sealing Bead to ensure a precise fit, Fuel-management modifications are not required for increased performance, Pleated media provides a large filtration area offering long service intervals, Fewer pleats than standard KN air filters opens up the intake tract, Multi-layers of woven cotton gauze media offers excellent filtration, Designed to increase power on modified sportbikes, Fuel-management modifications may be necessary, Washable and reusable, pre-oiled and ready to ride, Designed to provide increased performance, Made in the U.S.A. for over 50 years, Two-ply cotton race filter media, Purpose-built for racing