Abstract: An attachment mechanism and method for connecting an item to a tube structure. The attachment mechanism includes a male portion defining a notch therein; at least one nut configured to be selectively received in the notch; and a fastener. When in use, the fastener draws the nut deeper into the notch, causing an outer circumference of the male portion to expand and engage with an interior surface of the tube structure. The method includes inserting a nut into a notch of the male portion; inserting the male portion and the nut into the tube structure; inserting a fastener into an opening in the tube structure, through the male portion, and into the nut; and tightening the fastener to draw the nut deeper into the notch, the nut causing an outer circumference of the male portion to expand and engage with an interior surface of the tube structure.

Abstract: An off-road vehicle and vehicle roof accessory assembly are disclosed. The vehicle includes a frame; a motor connected to the frame; a plurality of ground engaging members operatively connected to the frame, at least one ground engaging member of the plurality of ground engaging members being operatively connected to the motor; a roll cage connected to the frame, the roll cage defining at least in part a cockpit area; two seats connected to the frame, the two seats being disposed side by side in the cockpit area; a cargo box connected to the frame rearward of the two seats; and the vehicle roof accessory structure, including an accessory support structure selectively connected to the cargo box, the accessory support structure being adapted for selectively receiving at least one rooftop accessory for extending over and selectively connecting to the roll cage and the support structure.

Abstract: An off-road vehicle and vehicle roof accessory assembly are disclosed. The vehicle includes a frame; a motor connected to the frame; a plurality of ground engaging members operatively connected to the frame, at least one ground engaging member of the plurality of ground engaging members being operatively connected to the motor; a roll cage connected to the frame, the roll cage defining at least in part a cockpit area; two seats connected to the frame, the two seats being disposed side by side in the cockpit area; a cargo box connected to the frame rearward of the two seats; and the vehicle roof accessory structure, including an accessory support structure selectively connected to the cargo box, the accessory support structure being adapted for selectively receiving at least one rooftop accessory for extending over and selectively connecting to the roll cage and the support structure.