Yakima makes 2 systems that install on a truck T rail system, Overhaul and Outpost. Overhaul puts cross bars at roof level (30"), Outpost is 19" above side rails and also has cross bars. Both can then take assorted bike trays, (Frontloader as example).
Looks like you've a retractable Tonneau cover so either of these work. They are also very pricey at around $1000 for the towers, plus the T rail fit kit, plus the HD crossbars, then add the cost of the bike trays, the Frontloader is about $250. This design does let you get full access to whatever is stored in the bed.
The Yak stuff is the only stuff that works with T rail as far as I could determine when I was exploring the options for a Frontier I purchased last Feb. By the time I looked at a Pace Edwards cover, plus the Yak gear, it was near the price of a Leer cap with T rails, which was the route I chose.
Last edited by Steve B.; 08-25-21 at 07:37 PM.