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4" --> 2.5". What needs to be changed?

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Old 03-05-2015 | 05:01 PM
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Default 4" --> 2.5". What needs to be changed?

Hey All, recently i purchased my 2nd JK and 4th Jeep. It has a "4inch lift" and 35s along with some nice summer features. I can't identify the lift, it is white shocks with blue boots, Black springs, sway bar links have red bushings. All arms look stock.

Jeep rides nice and doesn't have any draw backs but i think the 4" looks a little goofy on my 2 door so i plan to change it to a 2.5" spring with 33x12.5x15s. I have debated cutting the springs since they are NOT progressive but i am weary.

My question. IF i were to switch out to a lower spring, will my current sway bar links work?

Thanks in advance.

Old 03-05-2015 | 05:39 PM
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I think it looks great. I would imagine you would need to swap the shocks and sway bar links if they are not adjustable. Do you know if the driveshaft is stock?

Last edited by arasco85; 03-05-2015 at 06:16 PM.
Old 03-05-2015 | 07:40 PM
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It doesnt look bad. Its just excessive, for me, for my 80 mile a day commute. Also those federal M/Ts with E ratings are insanely heavy and rough.

You think going from a 4 to a 2.5 would require new shocks, i would think they would have more than ample travel?
Old 03-05-2015 | 07:44 PM
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Originally Posted by stiwhip
It doesnt look bad. Its just excessive, for me, for my 80 mile a day commute. Also those federal M/Ts with E ratings are insanely heavy and rough. You think going from a 4 to a 2.5 would require new shocks, i would think they would have more than ample travel?
it would be the up travel I would be worried about. How much shaft is showing currently? I know, I know. That's what she said
Old 03-05-2015 | 07:58 PM
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A 4" lift and it does 'not' have any form of caster correction? (and a few more ??? just for the heck of it...) If you have had the alignment checked, what is the caster?

The shocks are sized for a 4" lift? Dropping to shorter coils means the shocks will always be compressed, right? Hit a bump, and they bottom out. Again and again and again. So be sure to do some measuring and bumpstop accordingly. (assuming you have enough space to add taller bumpstops with the shorter coils)

The links will be too long, but some up-angle isn't a problem. Short links is what you don't want.

Are both axles centered now? Dropping down will shift both of them to one side. (tire on one side further out than the other side). If they are currently shifted (no axle centering with the 4" lift), then it won't be an issue, as lowering will bring them both back in a bit.

Is there any steering correction? (drag link flip or drop pitman). If so, you may want to remove and go back to stock.

Rough ride with E-Rated tires? Lower the psi...
Old 03-06-2015 | 01:36 PM
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I definitely would not cut the springs. What else was added for the 4" lift. Some pics of the undercarriage parts may help to identify what you have going on here.
Old 03-06-2015 | 06:18 PM
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im not sure. I will snap some pics tomorrow.



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