Increase performance & add style to the engine. Features a performance filter with a pleated top to take in air from the sides & top of the filter for maximum airflow. Filter cover, spacers & clamps are all CNC machined from billet aluminum. Performance air filter is made from high-flow black pre-oiled cotton media. Increased filter height specially designed to increase airflow without reducing leg room. Over 50% more air filter surface area than paper filters found in factory oval air cleaners. Dyno testing has shown up to a 3 horsepower increase after installing the upgrade filter on factory displacement M8 engines; up to 5hp gain for 124” big bore M8 engines. Kit Includes:. One performance filter. One billet air cleaner cover. Four billet spacers. Four clamps. Four mounting bolts.