Our 2021 OEII came with a 2" hitch mount rack receiver but the installation was (in my view and with respect to a lot of other good work done by the prior owner of our trailer) not quite up to 'factory standard'. In fact the U-bolt-based attachment method distorted the receiver shape just enough to make installation, and especially removal, of our 1Up hitch rack next to impossible. So I sought to improve upon it.
After some research I settled on a receiver ostensibly designed for use on certain Lexus GX460 models: https://www.amazon.com/dp/B0BRKR1Q4X
Drilling and attachment was straightforward given a drill press, a decent 1/2" bit, appropriate measuring tools, and a center punch. The aluminum is relatively soft and drilling oil was not used. I have not been able to get all the chips out of the interior, but did not try too hard to remove an end cap and access the box section beam interior that way. The hardware is 3 1/2" x 1/2" stainless with stainless and yellow zinc washers.
We have not tested the setup on the road yet, but static fitment went fine. The receiver and backing plate are fairly heavy; according to the retailer, about 10 pounds. This item is designed for towing, when attached to a GX460; it is likely overkill for this application, but that's OK by me. A side benefit is the receiver has safety chain mounts through which a cable lock could be passed.
I discussed this with Jason and he indicated the factory were considering offering a 2" receiver option moving forward. Our bike rack is 2", our cars and TV have 2" receivers, and use of an adapter was not appealing to me.
In hindsight I might have painted it white, or silver 😀
Enjoy!
Tim