Pre-Filters are highly recommended for applications that are used in extremely rugged environments. Manufactured from a durable water resistant polyester material. With uniform micro openings that filter out debris 5 microns and larger, dyno & flowbench testing has proven no significant loss in airflow using this product.

Fits only MAC4 "Jet Pack" style filter. Click here for the replacement pre-filter for MAC1 air pumper systems.

Pictured with replacement MAC4 "Jet Pack" style filter (sold separately)