2” Spacer lift with rubicon XR suspension on JLU Sport

[stretch-bsn]

How we doing! New jeep owner and I’m hooked! I picked up a new to me 2018 JLU Sport S about 2 weeks ago. It came with 315’s 70r17’s. Bought a set of rubicon XR shocks and springs with the longer lower control arms, and an adjustable track bar.

Upon further inspection today I am seeing my Jeep already has a 2” AEV spacer lift.

So my question is this. If stock rubicon XR’s can take a 2” spacer lift can I install these together and have it run reasonably well? I’m not looking for a sports car and I will off road wheel on mild to moderate trails only (for now). It will mainly be on the road and I won’t pretend I’m some hard core off road dude…I do want the travel but I also want the look. I’ve read mixed reviews on this and would like some feedback. I’m concerned with just the 2” spacer lift I’ll be rubbing pretty heavy off-road.
Thanks in advance!!

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[6th Floor Mule]

Just a thought, but you may want to first consider adding a set of Rubi fenders. This will provide additional ~1”+ clearance without even touching the suspension. Based on your posted measurements, my Rubi fendered Sahara on smaller 34’s and similar 2” puck measures 1.5” higher at the fender. I refer to it as the functional “optical“ lift. Really depends on where you expect to rub and how much additional clearance you need.

Also, you mentioned you bought with “the“ longer control arms. The stock XR arms are not longer, so hoping you mean aftermarket LCA’s or Mopar lift LCA’s, etc.

Welcome to the group!

 

[GATORB8]

What bump stop do you have? Shock extensions or their Bilsteins?

 

[stretch-bsn]

Just a thought, but you may want to first consider adding a set of Rubi fenders. This will provide additional ~1”+ clearance without even touching the suspension. Based on your posted measurements, my Rubi fendered Sahara on smaller 34’s and similar 2” puck measures 1.5” higher at the fender. I refer to it as the functional “optical“ lift. Really depends on where you expect to rub and how much additional clearance you need.

Also, you mentioned you bought with “the“ longer control arms. The stock XR arms are not longer, so hoping you mean aftermarket LCA’s or Mopar lift LCA’s, etc.

Welcome to the group!

Hey thanks so much! I’ll definitely look at that fender swap…I hadn’t considered it. I will verify the LCA’s I have are the longer mopar arms. I believe they are but I bought the whole thing as a kit from someone on marketplace. He was actually a really cool guy and mentioned this forum. I believe he said it was the longer LCA’s. He also gave me a Rubi XR front drive shaft which is cool. I’m hoping I can add it all together with no real issues. I just saw a thread where someone added 1.5” spacers and rubicon suspension to their sport…on 33”s with stock LCA’s and in the thread he said it ran very well.

 

[stretch-bsn]

What bump stop do you have? Shock extensions or their Bilsteins?

Not sure if this answers you…

this is the AEV kit the bump stops are included in the kit and already on the JL

https://www.aev-conversions.com/product/2-spacer-suspension-lift-jl-wrangler/

The shocks are the rubicon XR shocks and springs. The numbers show they came off a JLUXR 3.6 etorque

 

[stretch-bsn]

I know there are many threads that talk around this topic and many that have been started but unfortunately I haven’t seen any that show the completed results. So trying to see that out until the end.

 

[GATORB8]

I know there are many threads that talk around this topic and many that have been started but unfortunately I haven’t seen any that show the completed results. So trying to see that out until the end.

So the first kit has (what I assume are) 2" bump stops and 2" shock extensions. You won't be able to run the shock extensions with the XR shocks with only 2" of bump.

You have not rubbed yet?

 

[Zandcwhite]

If you use the aev shock extensions with the xr shocks it will work, but you're leaving a lot of travel on the table like that. You could run shocks for 3"+ lift and get much more downtravel in the same space. You may be low on caster with that much lift, but a set of adjustable LCAs would solve that problem.

 

[GATORB8]

If you use the aev shock extensions with the xr shocks it will work, but you're leaving a lot of travel on the table like that. You could run shocks for 3"+ lift and get much more downtravel in the same space. You may be low on caster with that much lift, but a set of adjustable LCAs would solve that problem.

You mean AEV spacers with XR shocks, right?

With the AEV extensions (assuming they are 2"), the 3.6XR shock lengths should be 19.25 comp and 26.38 extended.

2" of bumps set's you at 18.25". 3" should be okay with the extensions.

 

[Steph1]

For 315s, I’d just install the suspension period. A combination of both will make your 35 inch tires look small and you’re Jeeps geometry will be way out of wack. If you haven’t heard about the death wobble, you might find out what it is pretty quickly.

 

[Zandcwhite]

You mean AEV spacers with XR shocks, right?

With the AEV extensions (assuming they are 2"), the 3.6XR shock lengths should be 19.25 comp and 26.38 extended.

2" of bumps set's you at 18.25". 3" should be okay with the extensions.

I'm not sure how long the shock extensions are. At 18.25" of compressed length, you could run bilstein 5100s for 3-4.5" of lift or rock sports, both of which will provide 10-12" of travel vs the xrs 7" which was my point. Stock shocks suck.

 

[stretch-bsn]

I’ll have to measure when I get home.

still want it a little taller than it is now…think of if I go with just the jlur xr swap it’ll be a littler taller than the 2”? Maybe I should look at a 1” spacer with the xr suspension?
Anyone got take off 1” spacer?

 

[GATORB8]

I'm not sure how long the shock extensions are. At 18.25" of compressed length, you could run bilstein 5100s for 3-4.5" of lift or rock sports, both of which will provide 10-12" of travel vs the xrs 7" which was my point. Stock shocks suck.

As Zach mentions, the 3-4.5 5100s are a good choice, here's the calcs:

Current with AEV 2" / Guess at XR springs no spacer:

XR Springs with 2" Spacer, no extra bump:

XR Springs with 2" Spacer, 3" of bump:

 

[stretch-bsn]

As Zach mentions, the 3-4.5 5100s are a good choice, here's the calcs:

Current with AEV 2" / Guess at XR springs no spacer:

XR Springs with 2" Spacer, no extra bump:

XR Springs with 2" Spacer, 3" of bump:

Whoa…this looks awesome…but how do I read it lol.

 

[GATORB8]

It's AnnDee's shock calculator from: https://www.jlwranglerforums.com/fo...gs-suspension-information-chart-matrix.66591/

Top is input.

Each row is a set of shocks.

First numbers are shock spec lengths. Others are installed.

Bump = Up, Droop = Down

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