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Old 11-21-2012, 09:18 PM   #1
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JKU springs on a JK

My question is about how much lift will be gained by putting 4 door springs on a 2 door. And if done, are there any other parts that are necessary (longer shocks, swaybar links etc)?

Any advice will be very helpful

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Old 11-21-2012, 10:41 PM   #2
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1/2" to 1", I bought and installed some to minimize the drop when installing the winch and heavier bumpers. New takeoff sets can be had for ~$100, no need to replace anything else.

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Old 11-21-2012, 11:44 PM   #3
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It all depends on current coils and replacement coils. Just because you get a set of springs off a JKU and put it on a JK doesn't mean you are getting stiffer set. In general, JKU's tend to have stiffer coils but not always. Jeeps seems to have a no set coils for a certain Jeep. At least that anyone can figure out. You need to get the number off the coils, should have a white tag on the coils with a number on it. The last two numbers are the coils spring rating. The front should be from 13-19 and the rear should be from 53-60. The larger the number the stiffer the springs. Usually get around .3" to .5" for each number you go up

Saying that, I had a set of 15/54 coils on my JK and ordered from Mopar.com a set of 19/60's and got around 1.5" up front (Had a heavy aftermarket bumper added) and 2" in rear. Added a set of 1" Teraflex coil spacers up front to level out for 2.5" up front in the end before eventually going to a 3" lift.
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Old 11-21-2012, 11:48 PM   #4
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Here is a great thread on this topic

http://www.wranglerforum.com/f33/con...wap-55849.html
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Old 11-21-2012, 11:54 PM   #5
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Don't "need" replacement shocks or links just changing to stiffer coils but if you add coil spacers you may need to upgrade depending on final lift you get out of it.
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Old 11-22-2012, 10:40 AM   #6
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They are 19/59's, so he should get some good lift coming from a 2d sport which Im sure has softer springs.

I'll post pics when we do it.

Thanks again for the help guys!
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Old 11-22-2012, 11:07 AM   #7
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Base on feedback from various forums and people swapping springs, going up two numbers = 3/4-1" gain in height e.g. 17 spring to 19 spring
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Old 07-25-2013, 11:50 AM   #8
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All I know is I took the coils from a JKUR 10th Anniversary and put them on my 2013 JKR and it lifted it 2.5' on the front and 2.25" on the rear.
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Old 07-25-2013, 01:12 PM   #9
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What about anniversary addition coil springs? I purchased them on eBay not realizing they came off of a JK... I have a JKU. The numbers on both springs say 6819 then they have 2 different numbers 6006AA and 6009AA... Will these work on my 4 door? I didn't think there was a difference.
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Old 07-25-2013, 01:19 PM   #10
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It depends entirely on the spring rating of any coil in question. An unlimited may or may not have a stiffer spring. Same for Rubis from the factory. The word on the street is monkees are in charge of springs there and randomly stick em on each jeep.
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Old 09-10-2013, 08:44 AM   #11
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All I did was change the springs and the shocks and it rides and wheels great! Did not need to change anything else... I am very happy! Next are AEV Rims and 35" tires... not sure what ones I want... I may even just go with some 15" steel wheels.. I am still debating...but I love the way the AEV Sevegre wheels in Argent look.
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Old 02-14-2014, 03:03 PM   #12
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Did you have to get it realigned?

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