Bubble Directional Carb Caps

There are two styles of bubble carb caps, directional and spinner. Directional Bubble Carb Caps have one or two holes coming down into the banger, some straight, some on an angle. Spinner Bubble Carb Caps have multiple air slots which create a spinning or vortex airflow within the banger. With directional bubble carb caps, the direction of the airflow is rather controlled and pointed in one direction. The bubble portion of the carb cap is best when paired with beveled top bangers for an air-tight seal and offers one finger airflow directional and volume control anywhere within the banger. Simply point and partially cover the top, don't cover the top or completely cover the top air-hole.