K&N’s Aircharger High-Flow Air Intake System provides low restriction, long service intervals and delivers more horsepower to your rider’s RZR XP900. It increases power by eliminating the restrictive stock OE airbox and replacing it with a powdercoated aluminum oversized airbox/heat shield, custom mandrel bent aluminum intake tubes and original K&N "XD Series" High-Flow Air Filters. The K&N Air Filters are washable, reusable, pre-oiled and ready for installation.