K&N Race Air Filter Kawasaki Zx10R K&N Race-Spec Air Filters are purpose built for closed course racing applications and developed with factory race teams using 40 years of race proven experience. Manufactured with fewer pleats than standard K&N filters for maximized airflow to the engine. Features: Designed to increase power on modified sportbikes Pleated media provides a large filtration area offering long service intervals Multi-layers of woven cotton gauze media offers excellent filtration Fits directly into OEM airbox with application specific Sealing Bead to ensure a precise fit Washable and reusable, pre-oiled and ready to ride Two-ply cotton race filter media Fewer pleats than standard K&N air filters opens up the intake tract Purpose-built for racing K&N One Year Limited Warranty Fuel management tuning required