The Surevalve ™ is an absolute necessity for your extreme ATV off road hobby.  The last thing you want two miles in the woods is a flat atv tire caused by a broken valve stem.  When you engage in extreme ATV activities such as mud bogging or driving through deep water you are at a great risk of severing that valve stem.  The outer break-away stem is also double sealed to keep dirt and water away from the valve core.  Don't ruin your day ATV ing with a flat caused by a broken valve stem, install Surevalve ™ today.