K&N's Universal Off-road In-line Air Intake System, part 54-6853, was designed for extreme off-road racing. From side-by-sides to full race trucks, this kit can be used on a variety of off-road applications. The washable conical K&N air filter has six layers of cotton gauze for outstanding protection in off-road conditions. In addition, a foam wrap pre-filter is included to further extending the service life of the K&N air filter. The air intake housing is a cylindrical canister for rugged protection which allows excellent airflow in harsh off-roading environments. It can be mounted using the included hardware for a complete install. We also include two velocity stacks, a 3.5 inch and 4 inch adaptor, to make fitment on your application easy.