I have previously used a Roof Rack manufactured by DMX on my 2019 X3 RC. I no longer can use it as I have upgraded my entire roll cage and would be willing to sell it for $250 if anyone is interested.
Here is a picture of it on the machine......
Automotive tire Hood Motor vehicle Automotive design Bumper

I am in theSouthern California area if that helps. It would be toobig to ship.