People trust Air Flow Research heads for performance and value. For over thirty years, Air Flow Research has been engineering cylinder heads that deliver unmatched flow and power output. AFR heads are flow-tested and subjected to a rigorous quality control process to ensure maximum performance in all applications. Airflow Research products find themselves on the fastest race cars and the most powerful street machines in the country. Airflow Research mission is to manufacture the highest quality, best performing cylinder heads and JEGS has the lowest prices on all of AFR cylinder heads with in-stock inventory ready to ship to your door.