DESIGNED FOR PERFORMANCE Our engineers use state of the art technology to design and manufacture the highest quality performance products in the industry. WE BUILD IT The aFe product line includes over 3,000 product applications, which are meticulously tested and manufactured in Corona, California. TESTED AND PROVEN aFe products are d yno tested with our in-house DynoJet, and our airflow products are also flow bench tested, for performance you can count on.