Some of the best gear doesn't fit a rack, not because it's too heavy, but because it doesn't reach both sides of the ladder rack. Compact rooftop tents, pods, solar panels and much more need a mounting point in between. That's what the Cross Rail gives you.
It adds an extra support rail across your BEAST rack right where you need it. Now gear that used to have nowhere to sit has a solid, square foundation to bolt or strap to.
See the fitting instruction video here.
Note: This upgrade adds mounting options but does not increase your vehicle's factory dynamic or static load limits. When loading, always distribute weight across your ladder racks and verify that your load ratings are not exceeded.