Its a bolt on hitch below the bumperette. If I remember correct, it a Smiltbuilt hitch. It tows great. You actually dont even know the trailer is back there. The jeep in general rides good. I run typically around 70 mph on the open road. Anything over that stresses the jeep too much with the lift and over sized tires. So with the trailer I run 65, loaded with my Brute Force and a 03 Trailerblazer 400. So your talking around 2500 lbs trailer and bikes. You can see in the picture, the jeep sits nice and level with the trailer on. Not too much tongue weight! I suspect that helps the jeep handle better.
My last jeep was a 79 CJ5, with a 304 in it. I used to tow a 21' Paramount open fisherman with it.
Too much tongue weight and my front tires of the jeep, barely touched the ground. lol. Jeeps tow great as long as the stayed balanced.