Actually that is not true. 129's are actually one of the stiffer springs you can get in a TJ. All springs are the same height but the higher number gives you more stiffness. My old 126's were the same height as a new pair of 129's I installed. Going up 3 part numbers gave me close to an inch of lift.
It depends on the year of your Jeep but Jeep used the following numbers:
Front: 126, 127, 128, 129 & 130's (higher number being stiffer)
Rear: 103, 104, 105 & 106
FRONT SPRINGS
The 126 and 127's were mainly used in early SE models since they have the smaller, lighter 2.5 liter engine.
128's were used in a lot of X models
129's Used in Sports, Sahara's and Rubicons
130's used in Rubicons.
REAR SPRINGS
103's used in soft top SE's in the early years
104's Later SE's, X models, Sports and Saharas soft top models
105's Sports, Saharas, Rubicons with hard top or duel top set up
106's Rubicons
I believe DC/Jeep changed the part number scheme for the last few years of the TJ but I am not exactly what they are. Maybe someone else can chime in.
04 Sahara Hard Top (My TJ):
129AB (Front)
106AA (Rear)
TJ Model
FRONT/REAR PART NUMBERS
SE
126/103 soft top
127/104 hard top
X
127/104 soft top
128/105 hard top
Sport
128/104 soft top
129/105 hard top
Sahara
129/105 soft top
130/106 hard top
Rubicon
129/105 soft top
130/106 hard top
Thanks for catching that and setting the record straight for the OP. I had skimmed through and read it wrong. I really hate passing along bad information.
I am looking to replace my sagging front springs. They are 129AB's and its a sport with dual tops and the "heavy duty springs" according to the build sheet. The rear has 105AA's. Does anybody know what "AA" and "AB" means? Also, if I were to go with a 130 in the front, how much of a difference would that make? Thanks in advance for any input!
I am looking to replace my sagging front springs. They are 129AB's and its a sport with dual tops and the "heavy duty springs" according to the build sheet. The rear has 105AA's. Does anybody know what "AA" and "AB" means? Also, if I were to go with a 130 in the front, how much of a difference would that make? Thanks in advance for any input!
I went up 1" going up 3 part numbers with a 4 banger.
My guess would be 1/4" at best with your 6 cylinder. Depends on how new your new donor springs would be. I wouldn't bother. Throw in a set of 3/4" spacers and you should be good to go.
I went up 1" going up 3 part numbers with a 4 banger.
My guess would be 1/4" at best with your 6 cylinder. Depends on how new your new donor springs would be. I wouldn't bother. Throw in a set of 3/4" spacers and you should be good to go.
I'm not really going for lift here. Well, I am...but only to 'lift' it back to where is should be with un-sagged springs. My springs have 60,000 miles on them and the previous owner (my uncle) plowed with it a couple of winters ago, which I'm sure contributed to the excessive spring sag.
I have BB spacers and the ones in the rear are 1/2" shorter than the front ones, but the front fender flare is still 2" lower than the rear one. I am looking to pick up a set of front springs from a 2006 with only a couple thousand miles on them to replace my saggy ones. There are a bunch of stock springs on here in the for sale section, but only two people responded to me and one wants too much money for them and the other has 130AA's and I currently have 129AB's.
What I'm wondering is, if I go with the 130AA's to replace my saggy 129AB's how much stiffer will they really be and how will it affect the ride by putting in stiffer front springs without stiffer rear springs? Also, does the "AA" and "AB" have a meaning or is it just part of the code? For example, I have 129AB's but is there also a 129AA? And is there a 130AB?
Sorry for the long and boring post, but I really could use an answer if anybody is knowledgeable on the subject.
Not sure of the AA or AB designation so I can't help you out here.
If you can get the springs cheap go ahead and give it a try but I doubt you will see more than 1/4" to 1/2" lift.
You might want to look at ZJ coils for the front. Do a search. I thought I saw post that indicated a 3" lift. Net 1 inch gain if you take off your spacers.
Not sure of the AA or AB designation so I can't help you out here.
If you can get the springs cheap go ahead and give it a try but I doubt you will see more than 1/4" to 1/2" lift.
You might want to look at ZJ coils for the front. Do a search. I thought I saw post that indicated a 3" lift. Net 1 inch gain if you take off your spacers.
Haha...I think you're missing the point. My springs are about 2" lower than they should be because they have sagged over time and because of the plow. If I take them out and lay them next to a set of springs with a few thousand miles on them, mine will be noticeably shorter. If I didn't have the spacers and body lift in there, the front end of my Jeep would be lower than the front end of the same Jeep with a new set of the same springs.
Look at the distance between the tire and the flare in the front and back wheel wells. There is almost 2" less space in the front because the springs have sagged so badly. With an almost-new set of springs and the 1/2" difference in my spacers front to back, that space should be about the same in the front and in the back.
I hope I'm not sounding like a **** here, just want to clarify exactly what I am looking to do...
Replaced the springs and shocks with 06 Rubicon parts I got off eBay. My 98 TJ Sport 6-cyl had 128 front and 104 rear (with 145,000 miles). Replacement part numbers were 129-front and 105-rear. Got 1" higher at the front bumper and 0" at the rear bumper, so as they say - results may vary. Wasn't really looking for lift anyway, just a better ride.
I want to lift it back to the height is should be with stock springs. Mine is lower than it should be because of the sagging, so a brand new (or close to new) set of the same springs will probably end up in the front end being almost 2" higher than it is now. Again, no trying to argue. Just tying to make sure its clear what I want to do since typing things over the internet isn't always the easiest way to explain something.
Thanks for your input tho. I've gotten more info from you than from anyone else who has read this tonight .
Replaced the springs and shocks with 06 Rubicon parts I got off eBay. My 98 TJ Sport 6-cyl had 128 front and 104 rear (with 145,000 miles). Replacement part numbers were 129-front and 105-rear. Got 1" higher at the front bumper and 0" at the rear bumper, so as they say - results may vary. Wasn't really looking for lift anyway, just a better ride.
So you went up 1 part number which is what I would end up doing if I used the 130's instead of my 129's. Did you experience any noticeable difference in the stiffness of the springs?
I know what you saying. You want to get back to where your old springs had the Jeep at one time. To me, you are lifting your Jeep back to stock height. Anytime you do something to a vehical that raises it, no matter why is lower... is to lift it.
I read somewhere on this board that there is 2 3/4 spacers now. That might be an option too. Replacing the BB spacers you have now with ones that are an inch higher would get you 1" higher than it is now.
So, if I go from a 129AB/6AA combo with 62000 miles to a set of 130AA/5AA springs with 100 miles, any idea what it would do for my LJ? Auto tranny, 2 tops, no real extra weight other than Mopar rock crawler bumpers front/rear, planning to run a safari top all summer.
Anybody? Do stock springs wear out around 60,000 miles?
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