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Old 02-15-2014, 12:15 PM   #1
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Jku springs on jk

I was wondering how much a lift I would get with JKU springs on my JK?

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Old 02-15-2014, 07:59 PM   #2
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Depends on the number. The springs range from 12 to 19 in the front and 54(pretty sure) to 60 in the rear. If you go from the low end to the high end you could get 1.2-2" of lift. You can find the rating as the last 2 numbers on the tag on the springs

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Old 02-15-2014, 08:27 PM   #3
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Quote:
Originally Posted by mrayb View Post
I was wondering how much a lift I would get with JKU springs on my JK?


There is no difference between 2 door springs and 4 door springs. Both are JK's. As mentioned above you have to compare the numbers. It's entirely possible for a 2 door to come from the factory with higher number springs than a 4 door.
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Old 02-16-2014, 07:44 AM   #4
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jkjeeper06 might be on the high side saying 2" but I have done this swap and your pretty much garantteed a 1" all the way around. As daggo66 states all JK springs will fit any JK, 2dr or 4dr, the tag # is what tells them apart and the higher the # the stiffer the spring and the higher it will sit your 2dr. I got 1" all round, using 17/18 in the front (the higher # goes to the passenger side) and 58's in the rear. If you cannot find the # tag, what you want is a 4dr with a tow package or a Rubbi with/without tow. A Rubbi will likely get you 19's for the front and likely 58 to 60's for the rear, BUT it's not a garantteed! Totally dependant on what year and what options were order on the original jeep. Don't be surprised to see the rear springs look almost exactly the same size, they're heavier coils and when installed won't "squat" as much as your stock ones, hence holding your jeep higher.
Hope this helps.
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Old 02-16-2014, 11:10 AM   #5
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Most of the time what you will find as the stiffest take off springs for sale, will be 18 front and 59 rear. You can order from Mo-par direct 19 front and 60 rear.

This does not include the 10A springs, which are different!
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Old 02-16-2014, 11:11 AM   #6
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Thanks for the replies. I guess I should stop being cheap and just get a lift.
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Old 02-16-2014, 11:24 AM   #7
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Thanks for the replies. I guess I should stop being cheap and just get a lift.
Your original idea of increasing height with stiffer springs has a lot of merit!
But to determine how much additional lift, depends on which springs that you currently have.

Example: I have on my 2013 Rubicon 14 fronts, and 57 rears. So if I install say 18 fronts, and 59 rears, well then the amount of lift from front to rear won't be the same. But rather I will receive more in the front verses the rear. This is why it is hard to answer your question. In my case, I will probably get, (and I am estimating), about 1 1/2 inches front, and 1/2 rear. So I would average about 1 inch.

So start by looking at the tags on your existing springs, last two numbers and then go from there........
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Old 02-16-2014, 12:19 PM   #8
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There is no evidence that the higher number springs are thicker, heavier, or stiffer. They are in fact taller.
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Old 02-16-2014, 03:58 PM   #9
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Thanks for the replies. I guess I should stop being cheap and just get a lift.
I added a few hundred pounds in aftermarket bumpers and rails which sagged my 2 door a bit as one would expect. Taking the advice of Kjeeper10, I swapped my 2dr springs for 4dr springs, put in a 1.5" Teraflex Performance leveling lift and Rancho shocks and netted about 2.25"-2.5" of lift which is about where I wanted it. Here's a pic of the front 2dr vs. 4dr springs as an FYI (didn't take a pic of the rear springs).
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Old 02-16-2014, 07:36 PM   #10
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I went from 14/55 to 18/60. Even with my aftermarket bumpers, according to kjeeper, I wound up with 2 - 2.5 inches.
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Old 02-16-2014, 08:03 PM   #11
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Quote:
Originally Posted by MnJK View Post
I added a few hundred pounds in aftermarket bumpers and rails which sagged my 2 door a bit as one would expect. Taking the advice of Kjeeper10, I swapped my 2dr springs for 4dr springs, put in a 1.5" Teraflex Performance leveling lift and Rancho shocks and netted about 2.25"-2.5" of lift which is about where I wanted it. Here's a pic of the front 2dr vs. 4dr springs as an FYI (didn't take a pic of the rear springs).
Thanks for posting the photo. What are the numbers on the 2 door and 4 door springs?
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Old 02-16-2014, 10:27 PM   #12
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Same height. more coils on the swap i did. 14 on the left. 18 on the right. netted about 1.5"

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Old 02-16-2014, 10:53 PM   #13
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Quote:
Originally Posted by MnJK View Post
I added a few hundred pounds in aftermarket bumpers and rails which sagged my 2 door a bit as one would expect. Taking the advice of Kjeeper10, I swapped my 2dr springs for 4dr springs, put in a 1.5" Teraflex Performance leveling lift and Rancho shocks and netted about 2.25"-2.5" of lift which is about where I wanted it. Here's a pic of the front 2dr vs. 4dr springs as an FYI (didn't take a pic of the rear springs).


Good pics for a reference. Thanks
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Old 02-16-2014, 10:56 PM   #14
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I'll check out the tags and see what I have. I've heard that Jeep has a ton of different spring rates for these things.
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Old 02-17-2014, 08:07 AM   #15
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huh, glad i spotted this thread, I thought they would all be the same (meaning all 2013's same, all 2014's same) I just went out to check mine 14 in the front, have to move jeep or shovel snow to check rears so i will later. I thought mine sat a little lower with nothing aftermarket yet sitting next to same jeep only 2014 at dealership.. mmmmm may have to check into a swap..
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Old 02-17-2014, 10:00 AM   #16
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I replaced front and rear springs from 14/56 to 18/58 and netted 1.5". Also had to change sway bar links to get the sway bar level and track bar to center the axle.
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Old 02-17-2014, 10:34 AM   #17
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Just checked rear, 58 in rear 14 in front and thats on a 2013 jk rubicon, will def. be putting in small lift so may as well wait until then...
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Old 02-17-2014, 10:42 AM   #18
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I replaced front and rear springs from 14/56 to 18/58 and netted 1.5". Also had to change sway bar links to get the sway bar level and track bar to center the axle.
Is that 1.5 both front and back? I ask because you didn't evenly increase the spring rates on both front and back.
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Old 02-17-2014, 04:02 PM   #19
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The 1.5" was on the rear. I haven't measured the front yet. The rake looks similar to my eye with the rear a bit higher than the front. I'm very satisfied with the look and the ride. I didn't want to go higher as I have a vertically challenged spouse.
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Old 02-17-2014, 04:46 PM   #20
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Lots of them on ebay pretty cheap. I bought a set of 18/59 take offs for $60 and free shipping.
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Old 02-17-2014, 05:15 PM   #21
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This is interesting. I also went from 14/56 to 18/59 and only gained 1.5 in the front. 7/8 in the rear. Mine is a hard top though. you soft top?
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Old 02-18-2014, 11:25 AM   #22
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I swapped in 17/58 from my JKU along with .75" spacers to my 2 door soft top and netted ~2" total. Honestly, the front feels great but those rear springs ride like a wooden wagon. It must be the weight just isn't there with my soft top, but it's harsh.
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Old 02-18-2014, 01:12 PM   #23
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I swapped in 17/58 from my JKU along with .75" spacers to my 2 door soft top and netted ~2" total. Honestly, the front feels great but those rear springs ride like a wooden wagon. It must be the weight just isn't there with my soft top, but it's harsh.
What are the numbers on the stock springs?
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Old 02-18-2014, 02:37 PM   #24
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This is interesting. I also went from 14/56 to 18/59 and only gained 1.5 in the front. 7/8 in the rear. Mine is a hard top though. you soft top?
Mine is also a hard top. Could it be shock travel? I installed Fox 2.0 shocks for a 1" to 3" lift.

I also have my rear seat removed.
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Old 02-18-2014, 08:14 PM   #25
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18/59s with TF 1" spacers all around. Just over 2" over stock. Went from 14/55s. Much better ride, added Rubicon shocks too.

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Old 02-18-2014, 09:12 PM   #26
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Got a set of JKUR takoff springs and shocks for my JK. Went from 13/54 to 19/59. Gained 1.75" up front and 1.25" in the back. Exactly the amount of lift I wanted for the new 33" Duratracs and wheels. Took about 6 hours solo in my garage to install everything.
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Old 02-19-2014, 11:02 AM   #27
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What are the numbers on the stock springs?
My stock springs were 14/55. Swapped to 17/58.
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Old 02-19-2014, 04:54 PM   #28
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Mine is also a hard top. Could it be shock travel? I installed Fox 2.0 shocks for a 1" to 3" lift.

I also have my rear seat removed.
No, ive got plenty of shock travel, OME for 4" - 6" lift. :yikes:
I wouldn't think the rear seat ways that much. Weird....
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Old 02-19-2014, 04:58 PM   #29
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Here are some 17/59s and some 19/60s.

Fronts: 19's on the left. 17's on the right.



Rears: 60's on the left. 59's on the right.


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