I have added some photos of a 1up bike rack and my stock 4xe Rubicon. This is what I have: A Kuat Hi-Lo hitch adapter with two pin holes (7" or 10" length). They make a
Hi-Lo Pro hitch extender. However, the Pro model only offers a 10" extension. On my stock receiver it is mounted for the adapter in the shortest position, with it extended only 7". Without the rack attached the adapter only extends to the rear of the spare. I leave it on and the risk of smashing my shin or leg is almost never with the door closed. The 1up rack is attached at the closest distance and I will move it out just a bit when I use it. I pushed it all the way in for demonstration purposes. There is room to pull either the hitch extension out further and/or the rack depending on your needs. With the rack attached and no bike mounted, the door will not open without hitting the rack. If I tilt the rack down and away from the jeep I can fully open the rear gate as long as a bike is not on the rack. Ther is approximately 2.5 inches of clearance between the rack and the bottom of the tire when tilted. With a bike mounted on the rack and the rack is tilted down and away I can get 2 feet of space between the jeep and the open gate. With the rack attached, the clearance from the bottom to the ground is 15 3/4 ". The rack will tilt up into its upright position. The rack is the 1up Super Duty Single. I have the add on for an additional bike. Adding the additional bike should not change any measurements.
Both the hitch extension and rack tighten and there is no rocking motion. Both of these companies provide excellent customer service.
I have seen options to order the side plates in a reverse direction from 1up. It is not on their website. But, I am told it can be ordered if you call them. Personally, I want the height and if I use this on my wife's vehicle I will need it to be higher.