4 Link Install2017-12-23T01:15:13-06:00

The following is how we installed the Moab 4×4 outpost (M4O) long arm lift kit on Larry’s 1993 YJ. The totally stock YJ was previously owned by an individual from the mountains of Colorado and it came complete with five studded snow tires. Mind you, this was July in the Moab desert and, as Larry found out later, steel studs don’t work worth a hoot on slick rock. Anyway, the previous owner decided to do some wheeling in the Moab area where he drove it through a rather deep stream on the Kane Creek trail. As fate would have it, the engine ingested a large amount of water and decided to divest itself of this water by blowing a couple of holes in the crankcase. Consequently, the owner decided to divest himself of the jeep. He then made Larry an offer that Larry couldn’t refuse. Thus, Larry ended up with an engineless jeep at a reasonable price. After Larryinstalled another engine we decided it was time for a suspension upgrade.

This is Steve standing beside the YJ as it’s about to be lifted by the hoist so it can be lifted with the long arm kit. Does that make sense? Anyway, if you look closely you can see the steel studs on the spare tire.


The first task was to strip the factory suspension from the YJ. Below are the stock suspension parts removed from the YJ. Note that the stock exhaust is on the pallet, as it also needs to be replaced.


2. Eric had the enviable task of cutting the stock spring and shock mounts from the frame. Actually, he did the majority of the kit installation.
Of course all of the stock mounting brackets on the axle housings have to removed and the kit brackets installed. But Eric lucked out here. We had installed one of our kits on a customer’s jeep and he later had the axles swapped out for Dana 60s. Consequently, we had a Dana 30 front axle assembly and a Dana 44 rear axle assembly just lying around. They already had the stock brackets removed and the M4O lift brackets installed. Even better, they both had 4.56 gears and the front had a Detroit locker while the rear had an air operated T-locker.


Here are the new (well, new to this YJ) axle assemblies ready for installation.


We begin the lift installation by installing a 1” body lift and lifting the engine 1”. We do this because the kit includes a shallower belly pan. The combination of the shallow belly pan and the 1” body lift gives 2 inches greater ground clearance.
Here you can see the difference in height between the stock belly pan (top photo) and the kit belly pan (bottom photo). Also note one of the body lifts in the lower photograph.


There are various options available for this kit. We can install it with coil springs, coil-overs or air shocks. Larry opted for air shocks on the front and coil springs on the rear. Actually, Larry didn’t have a choice. That is what we gave him whether he wanted it or not. Of course a paying customer has a choice. Did we mention that Larry is one of the owners? So now is the time to install all of the various mounting brackets for control arms, springs and shocks…

Eric is putting the control arm mounting bracket assembly on the chassis. This single assembly has mounting brackets for all four control arms on one side of the chassis. No bolts here, this kit is completely weld on for maximum strength and durability…

The bracket assembly in place. You can see how the front and rear lower control arms mount to the chassis…


To attach the control arms to the axle assemblies, we weld mounts directly to the axle tube for the front control arms. On the rear axle assembly we weld the lower control arm mounts directly to the outer portions of the axle tube. We weld the upper control arm mounts to a custom truss above the differential.

These are the right front axle control arm mounts.

These are the left front axle control arm mounts.

The rear axle assembly control arm mounts. Notice that we move the lower control arm mounts from the stock position on the bottom of the axle tube to a horizontal position. This gives a little more ground clearance under the axle.

Have you ever wondered why they call them shock absorbers? When you think about it, the springs absorb the shock and the “shock absorbers” are there to dampen the spring oscillations. I guess that’s why we drive on a parkway and park on a driveway.


Now that the control arms are installed it’s time to install the coil springs and shock absorbers.

These are the upper and lower perches for the rear coil springs.

The rear springs and shock absorbers in place.

Upper and lower mounts for the front air shocks. I guess it’s appropriate to call these shock absorbers since they function both as a spring and a shock absorber.


We have installed all of the new suspension parts and it’s time to see the result. Can you tell the difference between these two photos?

Looks like we need to trim the fender flairs.

Referencing the top of Steve’s head to the top of the jeep, it looks like we gained at least five inches of lift. Guess I should also mention that those are 35″ tires. That pretty much winds it up.

If you are interested in, or have any question about the m4o long arm suspension, give us a call or send us an email.

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