Airinx systems feature our newest generation Airinx air filter which is a special dual stage element sandwiched between our new dual chrome ABS spiral cages. This superior element uses 2 layers of 3 dimensional urethane foam to increase filtration and maximize intake airflow. The outer ply has larger pores to filter out larger particles through the first stage and a fine pore inner layer to filter out the finest contaminants air intake efficiency and the chrome finish will dress up any high performance engine compartment. Another Greddy innovation incorporated into all Airnix intake systems is a molded rubber inner funnel, which insures a smooth air flow transition to the aluminum piping (or adapter).