Lift kits and shocks - JeepForum.com
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post #1 of 7 Old 09-16-2020, 08:51 PM Thread Starter
thegyver
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Lift kits and shocks

Forgive my ignorance on this I'm a little new to this.

So I have an 2004 WJ, stock suspension setup. Within the last 1.5 years I put new Monroe Reflex on the back and later Bilstein 4600 on the front.

So keeping budget in mind. I'd like to retain those (if it isn't crazy to do) Until they are more worn or if I decide to do any super serious offroading. It is mostly a DD and not heavy offroading and what offroading I do do isn't necessarily rock crawling. I plan on getting to more of that in future. But was thinking if I bought something like 2.5 inch lift spacers from JGC Parts "Lift kit BB Budget Boost 2.5" + 2" spring spacers Fits: 99-04 Jeep Grand Cherokee WJ" on amazon.

Would I really need to replace the shocks?


Thanks guys!

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post #2 of 7 Old 09-16-2020, 08:56 PM Thread Starter
thegyver
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It is just sacrificing flex right? No damage or safety issues?
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post #3 of 7 Old 09-16-2020, 09:16 PM Thread Starter
thegyver
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Nevermind, I swear I looked around online quite a bit before posting the question here......but of course I found my answer 30 minutes after posting. Sorry thanks
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post #4 of 7 Old 09-16-2020, 09:49 PM
coldspit47
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Sort of, but not quite. Shocks (at least good ones like Bilsteins) have an optimum operating range - where they (and you) are most comfortable/efficient. A lift - BB or otherwise - takes the shock out of where it's most comfortable by however much lift is gained. Ideally, you want to buy shocks that are the proper new required length.

Stock numbers per Monroe:
20.75" front extended
21.75" rear extended

13" front compressed
13.75" rear compressed

Bilstein 4600 is 20.28" extended, 13.05" compressed.
Reflex is 21.75" extended, 14.125" compressed.

So yes, you're certainly limiting your flex travel, but you're also changing the piston position relative to the tube, which makes a big difference in shocks like Bilstein, which are specifically valved by application/ride height. I don't know much about Monroe, other than I used to buy their OE replacements for my cars growing up. You can probably get away with it, but you'll likely wish for something a bit more very soon.

I would also caution you against random suspension parts on Amazon, there are plenty of reputable companies out there who make solid parts for WJs...and WJs don't really like half measures

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post #5 of 7 Old 09-16-2020, 10:17 PM Thread Starter
thegyver
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Quote:
Originally Posted by coldspit47 View Post
Sort of, but not quite. Shocks (at least good ones like Bilsteins) have an optimum operating range - where they (and you) are most comfortable/efficient. A lift - BB or otherwise - takes the shock out of where it's most comfortable by however much lift is gained. Ideally, you want to buy shocks that are the proper new required length.

Stock numbers per Monroe:
20.75" front extended
21.75" rear extended

13" front compressed
13.75" rear compressed

Bilstein 4600 is 20.28" extended, 13.05" compressed.
Reflex is 21.75" extended, 14.125" compressed.

So yes, you're certainly limiting your flex travel, but you're also changing the piston position relative to the tube, which makes a big difference in shocks like Bilstein, which are specifically valved by application/ride height. I don't know much about Monroe, other than I used to buy their OE replacements for my cars growing up. You can probably get away with it, but you'll likely wish for something a bit more very soon.

I would also caution you against random suspension parts on Amazon, there are plenty of reputable companies out there who make solid parts for WJs...and WJs don't really like half measures
Ok thanks for the info! Yeah they are from this ancient looking site but listed on amazon. jgcparts .com

Do you have any recommendations in the 80 to 115 or so range for spacers or brands?
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post #6 of 7 Old 09-16-2020, 10:25 PM
Bigrigr
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I agree with Coldspit, The shocks you have will probably turn out needing replaced shortly after adding any lift. The budget boost is the cheapest and easiest way to gain a little more clearance for taller tires, but it's not really a good way to lift if you plan on wheeling it much. Most people add the "boost", and tinker a little with the newly found ground clearance. But then add a real lift later after they save up some coin. What this means, is you can probably add the boost and drive fine on the road for a short time, but plan on replacing those shocks soon afterward. Yes, you can get around with the stock shocks, but you will notice a big difference when you get the right shocks on there that fit the lift.

'00LMTD-4.7l,242hd,D30,D44A,3.73's,True-trac front,Spartan rear,4" short arm lift,JK'sW/32's
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post #7 of 7 Old 09-16-2020, 10:40 PM
coldspit47
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Quote:
Originally Posted by thegyver View Post
Ok thanks for the info! Yeah they are from this ancient looking site but listed on amazon. jgcparts .com

Do you have any recommendations in the 80 to 115 or so range for spacers or brands?
First rule of lifts is don't lift on a budget...Iron Rock has great stuff, they have a set of pucks for $159. A 2in foundation kit (new shocks/springs) is $400 direct from them, Kolak can hook you up with best prices though. If you don't wheel much and don't want/need bigger tires/wheels, stay stock unless and until you can afford a lift kit. WJs are pretty capable stock.
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