The Dynojet intake kit for the CB500 is designed to increase performance by giving you almost 50% more flow than stock with a dry compound element that has a filtration efficiency of 98%. With five layers of progressive cotton gauze media between 100% polyurethane top and base the Dynojet filter provides excellent airflow for maximum horsepower and torque. The tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings. Polyurethane construction insures tight no leak seal over the life of the filter.