I reached out to C4 and was bummed to learn that the Lo Pro Bumper with either the low or mid bull bar will interfere with the TSS-P system. I hope they are able to create a design that works in the near future.
Alternatively, they offer a Lo Pro Bumper without a bull bar which I am not yet...
I'm sure there are no shortage of options, but you might want to check out the Canvasback Custom Cargo Liner. While I've only seen a few videos of them, they seem to work particurarily well (especially with sand).
Best of luck!
