no, you'll be sorry if you do.
to achieve what you want, on an ultralight frame, you'll have to have a receiver welded and braced, to the frame, at a welding shop.
of course, this will void your frame warranty.
ultralight bumpers and tire mounts are unable to stand the bouncing and flexing, that bikes on a rack will do.
your R-pod has no shocks and you'll find your bikes and the rack, bouncing down the road. especially rough roads.
as an avid bicyclist, regular bikes don't weigh 18 pounds. that's would be the weight of super light/expensive road bikes.
i suggest actually weighing them.
you'd be better off carrying the bikes on the tow vehicle.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC