Aerodynamic rear drag reduction system for a trailer

An aerodynamic rear drag reduction system configured to be coupled to a rear frame assembly of a trailer including a rear frame and a rear swing door, the drag reduction system comprising:

• a side panel configured to be coupled to the rear swing door to extend generally vertically at least partially along a height of the trailer;
• a top panel configured to be coupled to the rear swing door to extend generally horizontally at least partially along a width of the trailer;
• a first hinge coupled at a first end to the rear swing door and at a second end to the top panel, the first hinge pivoting about a pivot axis;
• and
• a second hinge coupled at a first end to the rear swing door and at a second end to the top panel, the second hinge pivoting about the pivot axis, the second hinge being spaced inwardly of the first hinge and the pivot axis angling downwardly from the first hinge to the second hinge.