Airlift 1000 Air Bag Kit(PN: 60920)/ complete on 23 May
I did a weekend trip in the GX and needed to take the flatbed trailer. Because I opted for "soft" rear lift springs based on how often we drive empty vs loaded, I had a decent amount of sag in the rear even with just a welder, some scrap metal and furniture on the trailer. In order to be able to pull the car hauler loaded, some inflatable bags for the rear springs were the perfect solution.
I started off by finding the recommended kit for a FJ Cruiser/ 4Runner. Then I gave the Air Lift tech line a call to see if the taller Dobinsons springs would make a difference. They had me measure the inner diameter and height inside of the spring (from metal to metal). I came up with a 4.5' inner diameter and a 9.75' height. Because the distance was different (taller) than stock, they recommended PN 60920 rather than the stock FJ Cruiser/ 4Runner kit.
I received the kit a few days later.
I installed it in the simplest way - no electronic sensors or compressors, just a schrader valve on the bumper, a single air line to the axle, then a T-fitting, and up through the bottom of the spring mounts.
First I jacked the truck up by the body until the rear wheels were off the ground, then jack stands.
Next, I rolled the bags and stuffed them into the inside of the springs. I didn't need to pull the springs or anything like that - quick install.
I only used two of the four black "spacers;" I put them on the bottom of each bag to protect the fitting on the bag that connects to the lines.
Finally, I ran the hoses from the bags, to axle, to underbody, then to rear bumper.
Air Lift recommends you put 20 psi over night to check for leaks; if it holds you are good, if it looses pressure check for leaks. I took my time with the fittings and didn't have leaks.
Before and After pics to follow!
