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Old 09-19-2011, 03:10 PM
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rubicob suspension

Ive been seeing alot of rubicon oem springs and shocks being sold. Curious what is the difference between a rubicon set up and a unlimited x? Some one said spring stiffness and ride quality? If thats the case ill be keeping my eye on a setup in the future

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Old 09-19-2011, 03:28 PM   #2
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Better shocks.

The springs may be slightly stiffer, but probably not noticeably so. Look at the last two numbers (not letters) on the tags of your present springs, and then look at the tags on the springs being offered. The highest available are 19 (front) and 60 (rear), and most 4 doors (Rubi or not) come with close to those numbers.

So basically you'd be getting better shocks.

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Old 09-19-2011, 04:33 PM   #3
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I made the swap on my 2011 Sport 2 dr. It came with 14/55 springs, and the Rubicon set I got was 17/58. I wouldn't call the ride stiffer, but I would call it "firmer." Definitely an improvement. Bonus was a 1-1/4 inch lift.
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Old 09-19-2011, 04:36 PM   #4
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Old 09-19-2011, 04:36 PM   #5
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I made the swap on my 2011 Sport 2 dr. It came with 14/55 springs, and the Rubicon set I got was 17/58. I wouldn't call the ride stiffer, but I would call it "firmer." Definitely an improvement. Bonus was a 1-1/4 inch lift.
Yeah, for the 2 door it can--as a general rule--be a good swap, as they may come stock with relatively weak springs. However, the OP has a 4 door, which weighs much more and very likely has stiffer springs to begin with.

For example, my NON-rubicon 4 door came with 18/58. If his is the same and he swaped in the same "rubicon springs" you got, he'd actually be downgrading.

There is really no such thing as "rubicon springs." They may be stiffer than those that come on sports or saharas, but they may not. My non-rubicon stock springs versus the "rubicon" ones you installed are a good example.
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Old 09-19-2011, 09:43 PM   #6
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Old 09-19-2011, 11:29 PM
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Makes total sense, so almost could get away with getting the rubicon shocks only. My 4dr unlimit x is a daily driver with 40k just thought might be soon to replace shocks and if i can get a full set for 100$ compared to 250 then y not. Especialy since the shocks that im lookin at have 700 miles on em
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Old 09-20-2011, 05:32 AM   #8
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Dont want to hijack this thread.

SDUS Heavy Duty Suspension w/Gas Shocks this is on my 2011 JKU Sahara.
Is this std or like the Rubi a better stiffer set up, my jeep does sit around 2" higher than a sport. but it has 18" rims and TNBP 255/70R18 BSW On/Off Road Tires .

So with that said my ride seems quite firm and stable not like a boat or GCherokee we have?

Just curious as I am thinking of teraflex 3.5" lift. but if Im sitting 2" higher I might hold off untill she starts to sag?

Are the std shocks gas or oil..
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Old 09-20-2011, 05:34 AM   #9
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Im guessing the first digit 18/58 is the spring wire diameter, so 18mm diameter wire?
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Old 09-20-2011, 06:10 AM   #10
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Im guessing the first digit 18/58 is the spring wire diameter, so 18mm diameter wire?
That is not the "first digit". Both numbers are the last 2 digits of the model numbers. 18 is the front, 58 is the rear so I doubt that is the diameter.

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