Tonneau covers are offered in many different styles, Flip, Fold, roll or lift, all of which use the bedrails on the truck to either cover, or attach to. With the bedrails in use, you are limited to what rack systems can attach.
The Bedrock, Outdoorsman 300, Bedhead, Bikerbar, and Blockhead will need full access to the bedrail to be used, which is not possible with A Tonneau cover in place.
If you have any type of Bedcover/Tonneau cover on your truck that is fiberglass, you do have the option of doing a custom install using either a fixed point system, or a track system. When proceeding with these options please note, this is a custom install and you should contact the manufacturer of your cover prior to install to find out the max weight capacity of the Tonneau cover. For more information on these options click here
If you have a Tonneau cover or roll up cover that has a built in track along the bedrails, there is a chance that the Landing Pad 1 and SkyLine tower will work, however we will not have tested our products on anything but Yakima Tracks, so it will be a “use at your own risk” application.