Question about Rubicon spring height & spring part numbers

Spearmin

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So I'm looking to by a set of Rubicon takeoffs. From what I understand here is that the spring height can vary depending on the options the Rubi has. So question #1 is it safe to assume that the spring height will definitely be higher going from a sport to a Rubi? I'm not sure that the spring height# is on my sport just yet, but the spring numbers from the ones I'm looking at purchasing are:

Front L 3657AD
Front R 3658AD
Rear L 3588AA
Rear R 3589AA

Question #2 are these a pretty good height above the stock sport springs? I know I'm reaching here but figured I'd ask.





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The Fixer

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So I'm looking to by a set of Rubicon takeoffs. From what I understand here is that the spring height can vary depending on the options the Rubi has. So question #1 is it safe to assume that the spring height will definitely be higher going from a sport to a Rubi? I'm not sure that the spring height# is on my sport just yet, but the spring numbers from the ones I'm looking at purchasing are:

Front L 3657AD
Front R 3658AD
Rear L 3588AA
Rear R 3589AA

Question #2 are these a pretty good height above the stock sport springs? I know I'm reaching here but figured I'd ask.
Those will give some lift, but not much honestly. I'm pretty sure that's off either a soft-top/plastic bumper combo or a 2-door. You'll want even higher part numbers if you're looking for more lift...there are sets with 60/61 and 90/91, and also 61/62 and 91/92. I got close to 2" using the 60/61 and 90/91 on my 2-door base Sport.
 
OP

Spearmin

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Hey thanks.... that's the exact info I was looking for.
 

DadJokes

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The numbers you have are lower than my Sahara’s were up front and the same in the rear. I really don’t think those are Rubicon springs. I researched A LOT for months. I never saw those listed for a Rubicon here. The lowest numbers I’ve ever seen for a stripped Rubi is 59/60 & 90/91. While I can’t guarantee they aren’t Rubicon, there’s so many other options for part numbers, I’d go with a known part number that you can get an idea of the results. My numbers only gave 1” up front and .750 out back on my Sahara. A very modest increase but at a very modest price too. ~$150
 

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So I'm looking to by a set of Rubicon takeoffs. From what I understand here is that the spring height can vary depending on the options the Rubi has. So question #1 is it safe to assume that the spring height will definitely be higher going from a sport to a Rubi? I'm not sure that the spring height# is on my sport just yet, but the spring numbers from the ones I'm looking at purchasing are:

Front L 3657AD
Front R 3658AD
Rear L 3588AA
Rear R 3589AA

Question #2 are these a pretty good height above the stock sport springs? I know I'm reaching here but figured I'd ask.
Hello I was wondering if you ever got those springs and put it on your sport (wondering the height it added)
I’m currently looking at a set of rubicon take offs and noticed similar parts:
Front left 57
Front right 58
Rear left 89
Rear right 90
I did notice that my front springs are
Front left 3658ad
Front right 3659ad
(Haven’t checked the rear yet)
Since those parts numbers are lower than the current parts on my Jeep, Does this mean that those front springs would lower the front of my Jeep?
 

hoag4147

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Hello I was wondering if you ever got those springs and put it on your sport (wondering the height it added)
I’m currently looking at a set of rubicon take offs and noticed similar parts:
Front left 57
Front right 58
Rear left 89
Rear right 90
I did notice that my front springs are
Front left 3658ad
Front right 3659ad
(Haven’t checked the rear yet)
Since those parts numbers are lower than the current parts on my Jeep, Does this mean that those front springs would lower the front of my Jeep?
reference this chart. Look at Hardtop/Tow/Steel Bumper. this will give you the most lift.
https://www.jlwranglerforums.com/fo...gs-suspension-information-chart-matrix.66591/
 

MyDaughters20JL

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just wanted to check that my numbers are good to go:
wnat to put my shocks ('20 rubi 4-door with tow & plastic bumpers) and a set of rubi springs on my daughter's '21 sport S 2-door. will the 661/662 & 591/592 work with my takeoff shocks? realistically, what kind of lift will this get?
 

hoag4147

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just wanted to check that my numbers are good to go:
wnat to put my shocks ('20 rubi 4-door with tow & plastic bumpers) and a set of rubi springs on my daughter's '21 sport S 2-door. will the 661/662 & 591/592 work with my takeoff shocks? realistically, what kind of lift will this get?
@blnewt Has ton of knowledge of Rubi takeoff on 2dr :like:
 

rikity

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The numbers you have are lower than my Sahara’s were up front and the same in the rear. I really don’t think those are Rubicon springs. I researched A LOT for months. I never saw those listed for a Rubicon here. The lowest numbers I’ve ever seen for a stripped Rubi is 59/60 & 90/91. While I can’t guarantee they aren’t Rubicon, there’s so many other options for part numbers, I’d go with a known part number that you can get an idea of the results. My numbers only gave 1” up front and .750 out back on my Sahara. A very modest increase but at a very modest price too. ~$150

You could fish around for some takeoffs, I know we throw tons of em out here
 

The Fixer

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just wanted to check that my numbers are good to go:
wnat to put my shocks ('20 rubi 4-door with tow & plastic bumpers) and a set of rubi springs on my daughter's '21 sport S 2-door. will the 661/662 & 591/592 work with my takeoff shocks? realistically, what kind of lift will this get?
I'm pretty sure the Rubi shocks are the same regardless of spring rate. That being said, the 61/62 and 91/92 springs will give the most lift on a 2 door. I'm guessing you'll get at least 2"...I got close to 2" with the set below (60/61 and 90/91) on my 2-door.
 

Tooth

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I picked up some rubicon takeoffs this weekend and oddly they are the same part numbers OP listed above. Scanning ebay it seems that many of the 2021 rubicons have these "lower" spring part numbers. Comparing them to my sport the only difference in the front is they end with "AC" vs "AD". Now I'm second guessing if I want to even do the swap to the rubicon suspension. Real bummer...

Part numbers from what I picked up:
Front L 3657AD
Front R 3658AD
Rear L 3588AA
Rear R 3589AA
 

DadJokes

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That might be the case. I found another ‘21 with the same lower numbers as my Rubicon.

Here’s what I have. Definitely not as high of part numbers as they used to be with hardtop, tow group, steel bumpers. I got a set of 61/62 90/91’s for my Sahara. The only options my Rubicon does not have are proximity locks and the auto cruise and I do think it sits a bit lower than expected.

LF 68253658AD
RF 68253659AD
LR 68253589AA
RR 68253590AA

These numbers were the highest you could find on a Sahara at one point according to the complied list of part numbers by @AnnDee4444

@blnewt Might be right about them wanting to try to positively affect the steering characteristics by keeping caster higher.
 

itsooh

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I think OP got the numbers from my post.
I have taken the springs off from 2021 JLUR and part numbers are,
Front L 3657AD
Front R 3658AD
Rear L 3588AA
Rear R 3589AA

Tow group and hard top.
I asked the shop also in case if they mixed with other vehicle and waiting.
But I do not think they did.
Mystery....
 

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