You have to buy the harness system too if you store doors inside the vehicle.
I suggest getting the thicker, better garage storage bags and storing em inside your residence. They are more expensive but worth it. I have the set for my 4 door. The bags are huge btw. Going with the garage bags also reduces weight, reduces odds of damaged doors especially if offroading and free's up storage space in your bronco.
Most door off trips are day trips. If going on a long multi day door off trip, the onboard door storage system is the way to go.
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