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Old 10-11-2011, 03:59 AM   #1
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Question Suspension lift for 2012 2dr Rubicon

I just ordered a 2012 rubicon and was wondering if anyone knows how high I can lift it before making changes and modifications to the exhaust and drive shafts? I am looking at running a 305/70/17 tire which is around 34"
Thanks

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Old 10-11-2011, 04:28 AM   #2
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I read a thread and and it has it on teraflex to add exhaust spacers cause you can't lift it without the driveshaft hitting the exhaust. Also I went to a 4 wheel parts store and they said after 3inches you need to replace your driveshafts. They said the stock shaft would last a while but would mess up later on in a few months. I have a 2012 4d rubi and want to lift it also.

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Old 10-11-2011, 04:35 AM   #3
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thanks, I will try to find them.
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Old 10-11-2011, 05:18 AM   #4
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The thread is called "TeraFlex 2012 exhaust spacers, video clip" check it out to get an idea.
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Old 10-11-2011, 07:31 AM   #5
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Thanks man, great help. When are you planning to lift yours? Keep me posted on how you make out. I am still in Afghanistan and will be picking up my new rubicon when I get back in December.
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Old 10-11-2011, 10:19 PM   #6
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Your welcome. I'll lift it probably by January or February, or when I sell my bike. I plan on putting the TeraFlex pre-runner 6" lift if not the 4" then.
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Old 10-11-2011, 10:51 PM   #7
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Old 10-11-2011, 11:33 PM   #8
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What does mean. Good or bad
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Old 10-12-2011, 06:47 AM   #9
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Why would you put a 6" lift on a JK? What size tires are you going to run?
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Old 10-12-2011, 06:54 AM   #10
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Hey daggo66, what would be a good lift height to run 34's
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Old 10-12-2011, 07:40 AM   #11
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All you would need is 2.5". 6" would not only look ridiculous, but would handle terribly with such a high center of gravity. It would be extremely expensive due to the number of modifications that would be necessary. It would definitely require both drive shafts to be replaced and possibly a complete new exhaust system. The exhaust system could have huge complications for the 3.6 because of how precisely it is tuned to work with that exhaust.
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Old 10-12-2011, 08:35 AM   #12
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In the same boat

Thanks for the input Daggo,
My '12 JKUR will be here in a couple of days. my current plan is to hold off on the "major" lift and do a 2" budget lift (brand advice?) run it awhile while the dust settles on the exhaust stuff, I want to go with the biggest duratracs that will work on stock rims (advice, 285, 305 or 515?) and will I need wheel spacers?

thanks
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Old 10-12-2011, 08:48 AM   #13
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Thanks for the info. So with a 2.5 lift I shoud be safe with stock drive shafts at full articulation?
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Old 10-12-2011, 08:50 AM   #14
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Originally Posted by FOUR FLUSHER View Post
Thanks for the input Daggo,
My '12 JKUR will be here in a couple of days. my current plan is to hold off on the "major" lift and do a 2" budget lift (brand advice?) run it awhile while the dust settles on the exhaust stuff, I want to go with the biggest duratracs that will work on stock rims (advice, 285, 305 or 515?) and will I need wheel spacers?

thanks
You'll need spacers if you go wider than 285's. TeraFlex makes some 2.5" lifts that will clear 35's easy, bigger if you trim the pinch seams and add flat flares....
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Old 10-12-2011, 09:03 AM   #15
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Infernogirl, what are pinch seams you are talking about?
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Old 10-12-2011, 11:12 AM   #16
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Thanks for the info. So with a 2.5 lift I shoud be safe with stock drive shafts at full articulation?
Your limited to a 25" long shock before needing a new driveshaft.

Even pushing the exhaust system back to the cross member you will still need to replace the driveshaft. The driveshaft is maxed out at 27.5" long shock. (3" lift)
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Old 10-12-2011, 11:41 AM   #17
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Originally Posted by Darien L. Mattison
Infernogirl, what are pinch seams you are talking about?
In your case you would need to trim the end of your rock rail and the pinch seam that it covers.
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Old 10-12-2011, 11:52 AM   #18
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Originally Posted by Full-Traction Suspension View Post
Your limited to a 25" long shock before needing a new driveshaft.

Even pushing the exhaust system back to the cross member you will still need to replace the driveshaft. The driveshaft is maxed out at 27.5" long shock. (3" lift)
I've seen one of the Full Traction installs on a 2012 and it looks very nice. When you say the driveshaft is maxed out with a 27.5" shock length, are you referring to the angles of the new driveshaft or that the new driveshaft still hits the crossover pipe even if the exhaust is moved back to the cross member?
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Old 10-12-2011, 12:21 PM   #19
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I've seen one of the Full Traction installs on a 2012 and it looks very nice. When you say the driveshaft is maxed out with a 27.5" shock length, are you referring to the angles of the new driveshaft or that the new driveshaft still hits the crossover pipe even if the exhaust is moved back to the cross member?

The factory driveshaft is maxed out(operating angle) If you move the exhaust cross over pipe back to the cross member.

So even if you change your exhaust with adapters or a y pipe conversion to get extra clearance for the factory driveshaft. You will still need an aftermarket driveshaft (smaller diameter tubing) to run 27.5" long shocks ie 2.5" lift or more.


IMO
Lets face it, the factory driveshafts are not strong and you will need to replace them if you wheel your JK. Why fix it with a band aide (exhaust mod). Just swap out the shaft and be done with it.
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Old 10-12-2011, 12:30 PM   #20
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Originally Posted by Full-Traction Suspension View Post
The factory driveshaft is maxed out(operating angle) If you move the exhaust cross over pipe back to the cross member.

So even if you change your exhaust with adapters or a y pipe conversion to get extra clearance for the factory driveshaft. You will still need an aftermarket driveshaft (smaller diameter tubing) to run 27.5" long shocks ie 2.5" lift or more.


IMO
Lets face it, the factory driveshafts are not strong and you will need to replace them if you wheel your JK. Why fix it with a band aide (exhaust mod). Just swap out the shaft and be done with it.

After a good bit of research that's what I did. Went with the Full Traction 3" lift w/27.5" Bilstein 5100's and a front JE Reel driveshaft. Won't have to change the exhaust pipe at all (which I'd be reluctant to do w/out a LOT more info on it...it's built like it is for a reason) and still get full articulation.
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Old 10-12-2011, 01:26 PM   #21
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Originally Posted by Full-Traction Suspension View Post
The factory driveshaft is maxed out(operating angle) If you move the exhaust cross over pipe back to the cross member.

So even if you change your exhaust with adapters or a y pipe conversion to get extra clearance for the factory driveshaft. You will still need an aftermarket driveshaft (smaller diameter tubing) to run 27.5" long shocks ie 2.5" lift or more.


IMO
Lets face it, the factory driveshafts are not strong and you will need to replace them if you wheel your JK. Why fix it with a band aide (exhaust mod). Just swap out the shaft and be done with it.
Thanks for the clarification. I asked because I'm getting a 3.5" suspension install tomorrow and I'm relocating the crossover pipe to the backside of the cross member. I also purchased a new aftermarket driveshaft. I was concerned that the "new" driveshaft had a limitation with a shock longer than 27.5". From what you are saying, that is a limitation of the stock driveshaft even when the exhaust is moved out of the way, not an aftermarket one.
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Old 10-12-2011, 02:03 PM   #22
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Your welcome. I'll lift it probably by January or February, or when I sell my bike. I plan on putting the TeraFlex pre-runner 6" lift if not the 4" then.
Nice! I'm going to do a 4" PreRunner type kit on my 2012. How big of tires are you wanting to run?


Band Aids are used by all kinds of medical professionals and world class doctors. Is the #261000 exhaust spacer as good as the Y-Pipe? For some yes and for others no but it does what it was designed for at a much lower cost over the Y-Pipe.
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Old 10-12-2011, 08:16 PM   #23
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KBWolf, Is your jeep a 2012 model? I'm being told that the exhaust cross over will have to be moved back for 2" and above.
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Old 10-13-2011, 02:37 AM   #24
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Originally Posted by TeraFlex
Nice! I'm going to do a 4" PreRunner type kit on my 2012. How big of tires are you wanting to run?

Band Aids are used by all kinds of medical professionals and world class doctors. Is the #261000 exhaust spacer as good as the Y-Pipe? For some yes and for others no but it does what it was designed for at a much lower cost over the Y-Pipe.
Yea I was checking it out and I'm just gonna get the elite LCG 6" lift or 4" still thinking about it. And I want to run 35" tires
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Old 10-13-2011, 02:40 AM   #25
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Originally Posted by daggo66
Why would you put a 6" lift on a JK? What size tires are you going to run?
It's cause I saw a jk with 6" and 37s and looked badass so that's why. I just want something that looks good and performs good. What other suggestions do you have. How about a 4" lift
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Old 10-13-2011, 02:49 AM   #26
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Remember Kids, To high center of gravity is a bad thing.. there is no reason you should need more then a 4in suspension on a JK.. You need more lift after that for what ever reason that may be.. Run a 1.25in bl and or get flat fenders. Hell you can comfortably run 37's on a 2.5in sl with flat fenders on a JK/JKU.. Of course to run 37's unless it's a rubi will need some axle help and even if it's D44 F/R might still need to strengthn those axles.. No Cheap
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Old 10-13-2011, 05:15 AM   #27
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Ok, so if I just go with a 2.5 in lift, I can get by with just replacing the drive shaft and wont have to relocate the Y-pipe? Or will I still need to move it back also?
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Old 10-13-2011, 05:24 AM   #28
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You shoudn't have to change anything with a 2.5 sl. I guess the drive shaft might still be possible if the lift kit gives you a little more then the list 2.5 sl but it's not likely. I'll let others varify what I just said but Im 99.99999% sure it's fact. Also im sure you know but if you don't a 2.5 sl on a JK will let you run 35's..
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Old 10-13-2011, 06:17 AM   #29
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It's cause I saw a jk with 6" and 37s and looked badass so that's why. I just want something that looks good and performs good. What other suggestions do you have. How about a 4" lift
If you are hell bent on 6" you should be looking at a coil over system and be prepared to spend upwards of 10k. (axles, driveshafts, exhaust, etc.)
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Old 10-13-2011, 06:22 AM   #30
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XJ Knight, thanks for the info and help.

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