trome

I have a stock 2020 Nissan pathfinder and installed a Draw Tite hitch. As you know the vehicle can tow 6,000 and the off road pop up that we have is only 2,200lbs dry weight. The car pulls great and brakes awesome (with electric trailer brakes). Here is my dilemma and question. When i go even a bit off road (so think decent gravel roads with some loose rocks and undulating terrain) it is not unusual for me to drag the bottom of my ball hitch. As the clearance of the ball hitch is only about 6" from the ground. So i am looking for a way to add some lift to my Nissan. I have talked to some shops and they said the difficulty will be the fact that it is so new. It doesn't look like Summo Shocks are available. It seems like there are some Air Suspension Coils, but these require some maintenance. I was hoping to go with something more like set it and forget it. Any suggestions are greatly appreciated? And a side question, even though i am towing way under my car's capacity is a Auxilary Transmission Cooler necessary or overkill?