VEHICLE RACK ASSEMBLY

Disclosed are embodiments of a rack assembly configured to mount to sidewalls of a truck bed of a vehicle. In some embodiments, the rack assembly comprises a pair of side rails configured to secure to the sidewalls of the truck bed, a pair of tracks, and a plurality of mounting brackets configured to mount the pair of tracks to sidewalls of the truck bed and above the side rails so as to transfer vertical load from the tracks to the sidewalls of truck bed.