2.5" terraflex coil and fox sport 2.0 shocks.. do i need track bar and arms? - Jeep Wrangler Forum
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Old 09-29-2013, 06:16 AM   #1
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Exclamation 2.5" terraflex coil and fox sport 2.0 shocks.. do i need track bar and arms?

I own a stock 2012 pentastar JK 2dr . I am looking adding a lift to the vehicle. Quite convinced with the terraflex coil 2.5" and an adjustable fox 2.0 shocks. To this i am changing my tires to cooper AT3 285/70R17 with pro comp alloys. They are quiet and comfortable both on and off road.

My garage friend says this is the best mix for a basic mod to the JK. I am getting the 1351000 2.5" coils which is meant for 4dr. He says they can be fixed on a 2 dr and shall give a 3 inch lift on the 2dr. Dont no if he is right or wrong about it.. Can some1 throw me some light on it.???

Also he says lifting the car will give in more pressure to the stock trackbars and control arms. He says i need to replace them with terraflex trackbars and control arms. Says doing this will make the car perfect and keeps the steering smooth. Is it required?.. The main motive of modifiying the car is to go into the desert..

Need major help

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Old 09-29-2013, 07:49 AM   #2
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The 4 dr 2.5" springs are the 2 dr 3" springs, so he's correct on that.

As far as "need," you could probably do with out, but it's always better with. I think more of a concern are the brake lines. The 3" kit comes with extended brake lines, not just the extension bracket.

If you can swing it, go for it. If not, it won't hurt things if you out it off to save up for them. I would definitely go with the track bars first so your axles are centered.

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Old 09-29-2013, 08:15 AM   #3
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The 2.5" TF lift for the 2door should get you about 3" in the front and 2" in the back no need to go with the 4 door version. The front trac bar is not a must have but can be considered a good upgrade to help center the front axle .You will not need control arms unless you go over 3" of actual lift.
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Old 09-29-2013, 08:18 AM   #4
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Stick with the 2.5's for your 2 door . I like the idea of a adjustable stronger track bar at any height. Driveshaft/drivability issues come over 3" especially with a 2 door.
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Old 09-29-2013, 08:47 AM   #5
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If you want 3" get a 3" kit. I put the 2.5". 4dr kit on my daughters 2dr and it has a VERY harsh ride. The 4dr springs are heavier.

I say stick with the 2.5" kit designed for the 2dr and add a adjustable Trackbar if required. That's all you need. You actually may think your tires will bit small.
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Old 09-29-2013, 09:05 AM   #6
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Thank you so much guys... I agree with JTPHOTO .. THe 4 dr are very heavy.. THese leads to daming the OEM trackbar and arm... I will get the 2dr #1351002 terflex and put the fox 2.0 with it.. WHat is heard is having a 2012 automatic wrangler.. i would need to put exhaust spacers with it. Seems the 2dr teraflex will give less strain on the OEM's.

Hope it sorts my issue and gives my a clean ride...

Cheers
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Old 09-29-2013, 09:45 AM   #7
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I have the 2.5" TF spring kit and opted to not use the exhaust spacers and so far no problems. Front drive shaft looks same as new. Knock knock knock on wood. I beat on my JK hard so I am probably jinxing myself with all this talk.
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Old 09-29-2013, 10:48 AM   #8
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Originally Posted by avi_stonerjeep View Post
Thank you so much guys... I agree with JTPHOTO .. THe 4 dr are very heavy.. THese leads to daming the OEM trackbar and arm... I will get the 2dr #1351002 terflex and put the fox 2.0 with it.. WHat is heard is having a 2012 automatic wrangler.. i would need to put exhaust spacers with it. Seems the 2dr teraflex will give less strain on the OEM's. Hope it sorts my issue and gives my a clean ride... Cheers
Weight has nothing to do with "strain" lifting shifts both axles. At 2.5" of lift the front will shift over to the driver side side. Rear over to the passenger side about 3/8 or so. The body is actually pulled to the side of the TB axle mount.
The TF kit includes a rear bracket to center the axle. With the front it's either a adjustable track bar or nothing.
Now..... TF shows a video of the stock front track bar flexing with bigger tires. A adjustable track bar will do two things for you. #1 center the axle. #2 add strength and firm up the steering.
I highly recommend Synergy's grade 8 bolt kit (see sticky) the factory bolts are threaded all the way, eventually will eat up the bushings. NOT GOOD. 9/16 is also a little bigger then the 14mm stock.

Up to you on the track bar but like I said- I recommended it. What you might need, front lower control arms (at min) to rotate the axle down for caster loss. Caster loss can cause wandering/loose steering. Option #2 drop brackets. I posted 2 threads, one on AEV's and one on Rancho's. Check them out.

Good luck
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Old 09-29-2013, 03:54 PM   #9
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Originally Posted by avi_stonerjeep View Post
I own a stock 2012 pentastar JK 2dr . I am looking adding a lift to the vehicle. Quite convinced with the terraflex coil 2.5" and an adjustable fox 2.0 shocks. To this i am changing my tires to cooper AT3 285/70R17 with pro comp alloys. They are quiet and comfortable both on and off road. My garage friend says this is the best mix for a basic mod to the JK. I am getting the 1351000 2.5" coils which is meant for 4dr. He says they can be fixed on a 2 dr and shall give a 3 inch lift on the 2dr. Dont no if he is right or wrong about it.. Can some1 throw me some light on it.??? Also he says lifting the car will give in more pressure to the stock trackbars and control arms. He says i need to replace them with terraflex trackbars and control arms. Says doing this will make the car perfect and keeps the steering smooth. Is it required?.. The main motive of modifiying the car is to go into the desert.. Need major help
Okay...there's a lot going on here.
First, if you are planning on getting the 2.5" lift, get the 2.5" lift. It raises the front over 3" and the back just over 2"...hence 2.5
The one for the jku will give you 4" of lift in the front and just over 3" in the back.
If the idea is to get a 3" lift then buy the complete 3" kit with at least the 4 control arms and an adjustable front track bar.
One of the other differences that is a little less known is that there are different rear track bar brackets for the 2.5 vs the 3" lift. So if you you get the 4 door kit for your 2 door then you will have a nicely out of whack rear axle.
As you start to factor in those nice new control arms and the amount of gained flex you will be racing through the desert one day, see a child wander out from what seems like the middle of nowhere and know you've got to react quickly....you slam on your brakes and nothing happens...the young child is plowed over and at the very least airlifted to a hospital...what went wrong...well that last obstacle popped your front left front brake line and you didn't realize it....yet another thing that has to be addressed with that set up is longer front brake lines.
It's important to understand the difference between can and should, can you take your friends advice...yup...should you...nope.
Can your buddy give advice, well we all can, should he?....probably not...that was a terrible suggestion.
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Old 09-29-2013, 04:04 PM   #10
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As a side note, you may want to look at sticking with a 2.5" lift shock and not running the bumpstop extensions if you plan on sticking with a 33...there is a different shock for 2.5 only...it seems counterintuitive but it will maximize your uptravel with the smaller tires and the lower lift height.
If you plan on running a 35 down the line then install the bumpstop extensions now and get the 2.5-4" shocks.
Sorry for being over dramatic, but the frakenlifts are always more costly to correct and I'm usually the one breaking the bad news after the lift is done and the owner isn't happy because his stuff broke.
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Old 10-08-2013, 03:30 AM   #11
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Originally Posted by jrussblues View Post
Okay...there's a lot going on here.
First, if you are planning on getting the 2.5" lift, get the 2.5" lift. It raises the front over 3" and the back just over 2"...hence 2.5
The one for the jku will give you 4" of lift in the front and just over 3" in the back.
If the idea is to get a 3" lift then buy the complete 3" kit with at least the 4 control arms and an adjustable front track bar.
One of the other differences that is a little less known is that there are different rear track bar brackets for the 2.5 vs the 3" lift. So if you you get the 4 door kit for your 2 door then you will have a nicely out of whack rear axle.
As you start to factor in those nice new control arms and the amount of gained flex you will be racing through the desert one day, see a child wander out from what seems like the middle of nowhere and know you've got to react quickly....you slam on your brakes and nothing happens...the young child is plowed over and at the very least airlifted to a hospital...what went wrong...well that last obstacle popped your front left front brake line and you didn't realize it....yet another thing that has to be addressed with that set up is longer front brake lines.
It's important to understand the difference between can and should, can you take your friends advice...yup...should you...nope.
Can your buddy give advice, well we all can, should he?....probably not...that was a terrible suggestion.

I have made a slight change to plans on what i intend to do. I am looking at the AEV2.5" 2dr Dual sport XT specifically designed for 2 dr jku. They come with a rear track bar. the suspensions are progressive giving me comfort ride on road and stiffer rode in dunes. steering stabilizers from fox and exhaust spacer as car being '12 jk. do u think it is a better option..?? seems to be its much better than the TF lift
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Old 10-08-2013, 05:25 AM   #12
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You need to base your lift off of the size tire you want to run. Since you seem to be going 33's then yes you should stick to a 2.5" lift anything more an your tires will look damn small. Also this goes for 2door an 4door coils since you are only going 33's just go 2door. I have the teraflex 2.5" kit with the 4 door springs on my 2dr jk(did this for more height while running 35's) an there are absolutely no issues with the axles being centered or brake lines. The rear come with brake line extension brackets an if you need to you can unhook the front lines from the axle an zip tie it to say the shock an problem is solved. But in all honesty you need to keep doing research for yourself an talk to the people who make the lift kits(hince teraflex an aev) an not take opinions an let people sway you into a direction you don't wanna be in an then make a decision
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Old 10-08-2013, 06:11 AM   #13
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You need to base your lift off of the size tire you want to run. Since you seem to be going 33's then yes you should stick to a 2.5" lift anything more an your tires will look damn small. Also this goes for 2door an 4door coils since you are only going 33's just go 2door. I have the teraflex 2.5" kit with the 4 door springs on my 2dr jk(did this for more height while running 35's) an there are absolutely no issues with the axles being centered or brake lines. The rear come with brake line extension brackets an if you need to you can unhook the front lines from the axle an zip tie it to say the shock an problem is solved. But in all honesty you need to keep doing research for yourself an talk to the people who make the lift kits(hince teraflex an aev) an not take opinions an let people sway you into a direction you don't wanna be in an then make a decision
I accept what u say... My JK is my DD. Once a week I will be on dunes. I drove the Fox 2.0 shocks.. very stiff on the road.. i would prefer something which is just a lil less stiffer than FOX.... AEV according to ppl are a better jump from OEM and play a stiffer game on dunes. ..

Sticking to 32.7 (285)...seems to be this is enough and they are much lighter on rad...not taking my mileage down and ballooning out at low psi so i could crawl through the desert..

Open to advice on this ... need a lil more advice if i am going in the right direction or not>??
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Old 10-08-2013, 08:46 AM   #14
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I accept what u say... My JK is my DD. Once a week I will be on dunes. I drove the Fox 2.0 shocks.. very stiff on the road.. i would prefer something which is just a lil less stiffer than FOX.... AEV according to ppl are a better jump from OEM and play a stiffer game on dunes. .. Sticking to 32.7 (285)...seems to be this is enough and they are much lighter on rad...not taking my mileage down and ballooning out at low psi so i could crawl through the desert.. Open to advice on this ... need a lil more advice if i am going in the right direction or not>??
Tera flex 9550's are a good bit softer than bilstien or fox. Elkas are also softer but expensive.
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Old 10-08-2013, 09:14 AM   #15
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Originally Posted by avi_stonerjeep View Post
I accept what u say... My JK is my DD. Once a week I will be on dunes. I drove the Fox 2.0 shocks.. very stiff on the road.. i would prefer something which is just a lil less stiffer than FOX.... AEV according to ppl are a better jump from OEM and play a stiffer game on dunes. .. Sticking to 32.7 (285)...seems to be this is enough and they are much lighter on rad...not taking my mileage down and ballooning out at low psi so i could crawl through the desert.. Open to advice on this ... need a lil more advice if i am going in the right direction or not>??
Rancho 7000's.

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