Aztech custom made 6061 aluminum CNC ported piston head.

Chamfered 8 port head for max airflow and O ring pressure, back cut O ring groove for faster O ring release to eliminate vacuuming.

Includes CNC aluminum bearing plate retainer, thrust ball bearing housing and plates and screw plus one of our Viton O rings.

We highly recommend using a medium grade Loctite on the center screw to ensure the piston head stays firmly attached to the piston body.