Originally Posted by SilverSeven
thanks for that! have you heard anything about them? so its 2 air chambers??? so scientific, having a hard time wrapping my brain around it
They work amazingly well. It's a tube with a belt around its outside edge. It requires a second valve stem on each wheel, one for the tube and one for the tire as normal. As the tube is filled, the belt prevents it from expanding outward so it expands to the sides, and in doing so it presses the tire firmly against the rim and holds the bead solid.
You can run 0 psi in your tires in completely off-camber situations and never pop a bead.
Also note that most bead-lock rims only lock the outer bead. The Staun product locks both the inner and outer.