We installed a hard top support, roof rack and cargo box onto a 2018 Jeep Wrangler JL. The hard top support is known as a Backbone manufactured by Rhino Rack, this install required us to drill into the hard top to secure support parts inside the shell. The bars we used were VA150B and have track mount capability which attach to RLT600 feet. On top of the crossbars is the Thule Motion XT Alpine cargo box which contains 11 cubic feet of storage.
Today we installed crossbars and bike racks on to a Retrax bed cover for a Ford F-150. To mount the crossbars on the cover we used Rhino Rack's RLT 600 feet, which we paired to the Rhino VA180B. The weight capacity for this system is 165 lbs. The bars are equipped with channel mount capability.
The bike racks we put on the crossbars are the Yakima Highroad. The Highroad weighs 18 lbs, and dimensions are: L 56 in x W 9.5 in x H 4.5 in. Each bike rack has the capacity to carry one bike; road bike, mountain bike, electric bike, and fat tire bike capable up to 4". These bike racks are not track mount capable, however they have locking strap capability to make sure they stay secure on the vehicle.