Poly Performance Jeep Jk 4" Stage 3 lift versus AEV / Nth degree 3.5 " Premium lift - JeepForum.com
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post #1 of 21 Old 05-14-2009, 11:31 PM Thread Starter
TDmaster
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Poly Performance Jeep Jk 4" Stage 3 lift versus AEV / Nth degree 3.5 " Premium lift

So, forget the price differntial (the Poly costs almost twice the Nth).
The Nth lift only supports upto 35" tires, the Poly - 37".

What I want to know is if the Poly is as good as the price suggest and how do the two compare for both on and off road ride, tire clearance / rubbing at full articulations, etc.

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post #2 of 21 Old 05-15-2009, 12:15 AM
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The Poly includes adjustable control arms. I don't think the AEV does. I have the Poly high steer kit and it is a well designed piece and is made strong. I was impressed with it enough that I ordered their adjustable control arms and I am looking at some of their other products to improve my suspension. I have no first hand experience with AEV / Nth Degree.

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post #3 of 21 Old 05-15-2009, 01:18 PM
Biff Malibu
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I have the AEV 3.5" premium with 37" tires. It rides and drives fantastic!
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post #4 of 21 Old 05-15-2009, 01:41 PM
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or u could go with the Teraflex 4" lift?

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post #5 of 21 Old 05-15-2009, 02:31 PM
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i'm w/ bigen on this one...

i called and talked w/ the customer service reps of all 3 companies. after tons of research, reading, talking, and thinking, i ended up w/ teraflex b/c they definitely sold me on their products (thusly i ordered their lift and components). check out my build. the flex arm kit will allow me to change to bigger coils and shocks, if i so choose, later in my jeeps life.

hopefully i can get this stuff installed this weekend, but definitely by next.


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post #6 of 21 Old 05-15-2009, 07:35 PM
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and teraflex customer service is great.. i've already tested it out.. and they sent me my new item in a week.. =)

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post #7 of 21 Old 05-16-2009, 10:27 AM Thread Starter
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Quote:
Originally Posted by Biff Malibu View Post
I have the AEV 3.5" premium with 37" tires. It rides and drives fantastic!
AEV's website and forum reponses from the engineers (JimAEV and others) will only recommend 35's for the 3.5" lift...37" tires will rub unless you go to at least a 4" lift according to other posts both here and there.

That said, I am curious to know which brand of tire and type/size code is yours??


Have you ever had problems at full aticulation with the low side tire rubbing at the top of the flare?

I'm really surprised because I really want 37 inchers, but AEV 4.5" lift they endorse for 37's is only offered for the 4-door (unlimited) Wranglers, not the 2-doors because of the driveline geometry - they wont release one until they resolve that problem. That is why I have been looking at other options.

If your not having any issues with your lift and tire rub, than I just might go that direction (again)
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post #8 of 21 Old 05-16-2009, 11:06 AM Thread Starter
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Quote:
Originally Posted by BiGEN View Post
or u could go with the Teraflex 4" lift?
I have not researched the Teraflex line...the ones I have looked at so far are:

Full Traction
Rubicon Express
Rugged Ridge
AEV / Nth Degree
Poly Performance

All short arm lifts (I don't want the work of cut and weld that a long arm requires).

Some kits require new drive shafts (vibration issue). The only two 4"bolt-ons that say no drive-line mods are the Full Traction and the Poly P.
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post #9 of 21 Old 05-16-2009, 03:40 PM
BiGEN
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Quote:
Originally Posted by TDmaster View Post
I have not researched the Teraflex line...the ones I have looked at so far are:

Full Traction
Rubicon Express
Rugged Ridge
AEV / Nth Degree
Poly Performance

All short arm lifts (I don't want the work of cut and weld that a long arm requires).

Some kits require new drive shafts (vibration issue). The only two 4"bolt-ons that say no drive-line mods are the Full Traction and the Poly P.
if u go with a 4" lift.. i give u 3 months before u need new driveshafts.. i had a 3" full traction lift and needed new driveshafts..

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post #10 of 21 Old 05-17-2009, 12:27 PM
Biff Malibu
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Quote:
Originally Posted by TDmaster View Post
AEV's website and forum reponses from the engineers (JimAEV and others) will only recommend 35's for the 3.5" lift...37" tires will rub unless you go to at least a 4" lift according to other posts both here and there.

That said, I am curious to know which brand of tire and type/size code is yours??


Have you ever had problems at full aticulation with the low side tire rubbing at the top of the flare?

I'm really surprised because I really want 37 inchers, but AEV 4.5" lift they endorse for 37's is only offered for the 4-door (unlimited) Wranglers, not the 2-doors because of the driveline geometry - they wont release one until they resolve that problem. That is why I have been looking at other options.

If your not having any issues with your lift and tire rub, than I just might go that direction (again)
The tires I am running are Goodyear 37x12.50x17,(they measure 36.5" on the jeep with 27's of pressure) the wheels have 4.7" back spacing. The top of the rear fenders are not the problem.

The problem is in the front of the rear wheel wells at the top area of the pinch seam. When the suspension flexes, the axle does move back a bit, but not as much as the tire size.

You have choices on how to fix this. You can keep trimming the area (which is what I have done), You can use longer bump stops, or you can get adjustable rear control arms.

I love my set up, but if you want a plug and play set up, stick to the 35's.
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post #11 of 21 Old 09-14-2009, 04:38 PM
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What type of lift did you end up stepping up to? hows it working out?


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post #12 of 21 Old 09-14-2009, 04:44 PM
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You guys, there's WAY more to fitting a certain tire size than just spring height. Give me a JK with 3.5" (that's the most I would want) of lift and it will have 42" tires, 4" of up travel, and no rubbing.

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post #13 of 21 Old 01-31-2013, 12:14 PM
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I would not recommend doing business with Poly Performance. They left parts out my order, ignored my requests for help for 2 weeks, then when they finally did respond they said there was nothing they could do about it. I had to file a claim with PayPal to get a refund on the purchase. Slow to nonexistent support, and miserable to deal with. All over a little $10 part. Save yourself the hassle and go elsewhere.
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post #14 of 21 Old 01-31-2013, 12:25 PM
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I'm going to throw rock krawlers hat in the ring. I've got a 2.5" flex kit from them. Running 35's with the stock fenders, with flats 37's would definitely fit.
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post #15 of 21 Old 01-31-2013, 01:10 PM
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Quote:
Originally Posted by sjmurray View Post
I would not recommend doing business with Poly Performance. They left parts out my order, ignored my requests for help for 2 weeks, then when they finally did respond they said there was nothing they could do about it. I had to file a claim with PayPal to get a refund on the purchase. Slow to nonexistent support, and miserable to deal with. All over a little $10 part. Save yourself the hassle and go elsewhere.
In response to Steve here, here is a thread with info if anyone cares.

http://www.jkowners.com/forum/showth...=1#post1423899


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