Side boxes and extra load bar not included or available. Selling a Leitner designs active cargo system rack that I took off my 2020 Silverado 6.5’ ft bed. Should fit any 6.5’ ft bed trucks. I have both the rails to use with or without a tonneau cover. Rack is in great shape and works awesome. Only selling because I went to a canopy. Open to trades for 5x4.5 wheels with 31-33” tires.