How to Install Head Restraint Helmet Anchors
If you purchase a Simpson helmet, you can have any of the three anchors installed from the factory. But you may already own a helmet and want to add a head-and-neck restraint system. Or you may prefer another brand. In that case, Simpson’s Holli McAllister showed up the right way to install head restraint anchors properly.

SOURCE
Simpson Performance Products
704-662-3366
http://www.teamsimpson.com/