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Teraflex 3 Inch Sport S/T3 Suspension w/ Fox Shocks (07-18 Jeep Wrangler JK 4 Door)

Item J104222
ExtremeTerrain no longer carries the Teraflex 3 Inch Sport S/T3 Suspension w/ Fox Shocks (07-18 Jeep Wrangler JK 4 Door). Please check out Jeep 3-3.75" Lift Kits for an updated selection.
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    Review & Installation Video

    I'm Ryan from, and this is my review and installation of the TeraFlex 3-inch Sport ST3 Suspension with Fox Shocks fitting over 2007 and up JK. Today, we're gonna talk through the installation of this kit, which I'm going to give three out of three wrenches. This is probably going to be a four-plus hour install. This lift kit is for those of you looking for a really complete lift kit that's going to give you great performance on road and off road, but especially in those higher speed off-road situations. A lot of rock crawling, low-speed wheeling that we do isn't going to require things like TeraFlex SpeedBumps or a reservoir-style shock like this kit includes. So, again this is geared a little bit more toward that higher speed off road, however, it's still going to work very, very well at low speed, during some crawling and of course on the road as well. If you're comparing this kit to other TeraFlex kits, the non-sport TeraFlex kits, some of those will include adjustable control arms that will include the TeraFlex shocks and so the Fox shocks, so they are going to have slightly different components and again those ones aren't going to be geared as much toward the higher speed off road as this kit here is. Now, because of the sheer number of components and the quality of components that are included in this kit, this is going to be one of the more expensive kits that we offer. However, in my opinion, if you have the budget for it and you're doing the type of wheeling that this kit is geared toward, this is going to be a good buy. You're getting very high-quality stuff and you're getting everything you need to make your Jeep work very, very well. So, let's get into the components that are included with this kit. First and foremost, you're going to have your new longer coil springs, and this is where you're going to get that three inches of lift from. Of course, you're gonna have all four springs, front and rear, spring retainers, everything you need, and this is really where your main height is going to come from. Now this time, you're installing a taller spring, you're also going to need a longer shock to get you the most out of that suspension, and with this case, you are getting a Fox performance 2.0 series reservoir shot that has been tuned by TeraFlex for this kit on your jeep. So, this is designed to ride very, very comfortably, again, both on road and off road. Being a reservoir shock, it is, again, geared a little bit more toward that higher speed off road. With a shock like this, it's going to be designed not to foam and cavitate like a hydraulic shock might. The measured in charge that's in this nitrogen shock is there to keep the foaming cavitation to a minimum, enough foaming cavitation can just cause some shocks fade and you have the reservoir which allows you to hold even additional fluid to keep that fluid nice and cool, and again, really be designed for some higher speed wheeling, although these are also going to work very well at lower speeds also. You are going to get some control arms with this kit but these are going to fix the length control. And they're not going to be the flex arms from TeraFlex that have the hind joints on one end, they are going be rubber joints all the way around. So maybe, you would give up a little bit of articulation, but again this is geared more toward that higher speed, more flat type of off-roading than it is for rock crawling. You're going to get six control arms with this kit, which is going to be all four in the rear and the front lower control arms. The four in the rear is going to set your pinion angle correct, so you're not going to get new drive line vibrations. And up front, you're also going to reset your pinion angle but you're going to get some caster correction as well. When you lift your jeep to roll the axle or change the caster and when you don't have the proper caster angle, these tires won't want to self-center, which can give you a bit of a flabby feel especially when you're going down the highway. So these control arms that you're going to get in the kit, are going to fix both pinion and caster in the front and pinion in the back to make sure that all of your angles are closer to factory and going to work very, very well. Now, as far as centering the axle left or right underneath the jeep, up front you're going to get one of TeraFlex's adjustable track bars, which is going to be much, much stronger than a factory track bar as well as, as it says in the name, it's going to be adjustable. So this is going to let you center that axle completely in the front. Out back, you're going to get a track bar brackets, so you're gonna need your factory track bar, but this bracket is going to give you a little bit of adjustability, so you can change your roll center. This is the beefier style track bar that TeraFlex offers, so this is going to attach to your axle in a total of three different locations, being a very, very strong connection. So even though this is a little bit higher up, it can provide a little bit more leverage you're not going to get any wobble out of this bracket. And so far, the components that we talked about are components that are included in a lot of lift kits. With this kit, you're also going to get sway bar and wings of course, which again, are something that you get in a lot of lift kits. But then there are some components that you don't get in every lift kit, and that's going to be right over here, as the TeraFlex SpeedBump. Now, what that is designed to do is as your axle is coming up, instead of just coming in contact with a normal jounce bumper, which is designed to absorb that impact, it can still be a little jarring, a little bit shocking at speed. So these SpeedBumps are there to soften that blow even further and really give you a nice soft landing when you're getting bumps at higher speed. Now, because of the travel that the suspension has because of the length of the shocks and the springs and just how everything works together, this kit is also going to include limiting straps in both the front and the rear, which is going to help limit the down travel. So again, when you're going a little bit faster in your off road, the ground drops out from underneath you. Instead of the shock having to hold all of the weight of the axle falling, I have limiting strap which is going to help save the shocks from that damage. As far as this install goes, again I'm gonna give it three out of three wrenches. This is something that's going to probably take you four hours or more. There is some drilling, some modification that you'll need to do to your Jeep to get this kit installed properly. You're gonna need a lot of tools, probably empty the whole tool box, but the main steps of the install are going to be pretty similar to a lot of other kits out there. So the first step is, of course, supporting the jeep by the frame, jacking it up. You're going to remove or loosen anything that's keeping the axles from completely drooping. So you're gonna have to go ahead and loosen up your brake line brackets, your sway bar, and lengths and your shocks. Go ahead and let the axle completely droop down, remove the springs, puff in your new springs, your new shocks, your new track bars, control arms while there's no load on the axles. That's a really good time to install control arms. While everything is out of the way, you can install the speed bumps, the limiting straps, do your drilling. All and all, like I said, fairly standard steps and a fairly standard order, but there are going to be a few additional steps because of the additional components that are included in this kit that you don't have to do with some of the lift kits, which will add to the level of difficulty. So, this kit isn't the most expensive lift kit that we offer, it's not even the most expensive lift kit that TeraFlex offers, but it is going to be a little pricier than some others because of the sheer number of components that are included and the quality of the components. These Fox performance 2.0 reservoir shots, by themselves, are going to be very expensive. And then you start adding all of the other components that are included here and the price does add up quickly. So, I think for a kit that includes everything that has the shocks tuned for the springs and the weight of the vehicle that's really very, very well put together, I don't think this kit is overpriced. However, this is a kit that's designed for a very specific type of off-roading and you are gonna have to have a higher budget for it, so it's not for everybody. If you are looking to do a little bit of a higher speed style off-roading, you're not looking at doing that really low-speed rock crawling and you have the budget for it, I think this is a very well than the other kit. So, that's my review of the Teraflex 3-inch Sport ST3 Suspension with shocks fitting over 2007 and up JK. You can find it right here at

    Product Information

    Features, Description, Reviews, Q&A, Specs & Installation


    • 3 Inches of Lift
    • All Inclusive Suspension Kit
    • Street and Trail (S/T) Performance
    • Responsive Handling
    • Premium-Quality Bushings for Vibration Reduction
    • Front and Rear FOX 2.0 Reservoir Shocks
    • Front HD Adjustable Trackbar
    • SpeedBump Bumpstops
    • Sport Flexarms
    • Bolt-On Installation
    • Lifetime Warranty
    • Fits 2007-2018 Jeep Wrangler JK 4-Door


    Comprehensive System. It's all right here, 4-door Jeep lovers. Everything you need in a suspension upgrade to lift and stabilize your Wrangler. Whether you drive paved city streets or abandoned rocky trails, the TeraFlex 3" Sport S/T3 Suspension System with front and rear Teraflex-tuned FOX 2.0 Reservoir shocks should be your next modification.

    Smart Design. For dependable performance and responsive handling, TeraFlex designed these components with the highest-quality materials and manufactured them with precision workmanship. The heavy-duty front trackbar is adjustable so you can tweak the weight distribution as needed, and the factory-style bushings are proven to minimize vibration.

    In the Kit. The S/T3 system includes a 3" front and rear springs, SpeedBump bumpstops, exhaust spacers, adjustable front track bar, TeraFlex-tuned FOX 2.0 reservoir shocks, and 6 sport flexarms.

    Install and Go. The installation is a direct bolt-on process and it will take less than a day. Afterward, there's no need for alignments or adjustments, so you can take right off in your Jeep and experience the difference right away.

    Application. The TeraFlex 3-inch Sport S/T3 Suspension Kit with FOX Shocks is an ideal upgrade for all 2007-2018 Jeep Wrangler JK 4-Door.

    Freight Notes. Freight items can only be shipped within the continental 48 states, no expedited methods. What is freight shipping? Your Answers are Right Here!.

    Fitment: Details

    CA Residents: WARNING: Cancer and Reproductive Harm -


    Customer Reviews (8)

    Write a Review

    Ratings Summary

    5.0 out of 5 overall rating from 8 customers

    Installation Time: Weekend

    • August 27, 2018

      5 2016 Rubicon - ScottA Installation Time: Weekend

      2016 rubicon

      Very complete kit. Instructions could be a little more complete. On line directions differ from those supplied which created some confusion but easily overcome with common sense. Overall great kit. One note is that if you are using your stock rims you will need to use spacers so that there is enough clearance for the sway bar connects in the rear and shock reservoirs in the front.

      Helpful (5)
    • August 15, 2018

      5 2017 Wrangler - HugoG Installation Time: Shop Install

      It looks awesome.....

      It looks great and also handles a lot better than the stock.....

      Helpful (4)
    • April 10, 2018

      5 2016 Rubicon - JeffS

      Teraflex Sport S/T3 Suspension w/Fox Shocks

      I have a 2016 Rubicon and have been researching a number of 3 inch lifts and talking to different Jeep owners and every time after our discussions I came back to this lift and I am so glad I did! It is well constructed and the ride is great for a 3 inch lift. I know it is a little pricey, but let's face it, you get what you pay for! Some of my buddies bought cheaper lifts and they hate them. Now, besides wasting their money they also wasted there time because now they have the labor of doing it again. I would recommend this lift to anyone.

      Helpful (4)
    • December 06, 2017

      5 2015 Wrangler - JaimeR Installation Time: Weekend

      Installed on 2015 jku

      Good product! The ride is definitely better then stock. 3inches is the perfect lift height I feel. I will say it took a long time to install but I did take my time and made sure it was all done perfectly. All and all great product a little expensive but you get what you pay for.

      Helpful (5)
    • September 28, 2017

      5 2015 Wrangler - CodyL Installation Time: Full Day

      Just want to goo fast

      This is exactly what we needed. This being my wife's ride, it made total sense. it rides way better than stock especially over bumps on the road. I have not taken it off road yet so I can not state the capabilities of the lift in that area just yet. As for the install, it will be aggravating, watch the videos and follow the instructions and maybe it will work out with out a hitch. There will be things that will not fit first time and will need some persuasion. Best piece of advice, is after all your stock items are off, go through the instructions and drill out every hole that they want you to, if you follow the instructions exactly you will be drilling holes (like for the limit straps) around newly installed parts. All and all just buy this kit, its well worth the cash...

      Helpful (5)
    • April 07, 2017

      5 2008 Wrangler - AveryS Installation Time: Full Day


      I love this kit! It's quite expensive but it's a great kit that feel like stock suspensions but has way more flex for off-roading!

      Helpful (6)
    • April 06, 2017

      5 2013 Wrangler - AlexanderK Installation Time: Weekend

      Great all inclusive liftkit

      Great lift kit for someone who does not want to piece together there own setup. It does lack a rear track bar, front upper control arms and quick disconnects, so you will have to order separately if you desire to do these simultaneously. Directions that come with kit were pretty straight forward, but online youtube video of install does not match 100, so be weary. The front end does require a lot of drilling into thick steel so i'd recommend a good Ti coated drill set and 2 sizing bits. Don't forget to adjust the track bar and pitman arm once complete. Total install with 2 guys, a jack w/ jackstands and good tools took 12 hours. The ride is a bit stiffer with the Fox 2.0 shocks, but the height does not sacrifice any stability on the road. I am very happy with this kit.

      Helpful (7)
    • February 03, 2017

      5 2013 Wrangler - Antknee Installation Time: Full Day

      Worth the money!

      Went on smooth with no major problems. Had to have an alignment after and everything is perfect. Wasn't going to spend this much but I'm glad I did. Handling is greatly improved, removed all but the expected road bump wander. I replaced the upper arms with Teraflex arms as well, wish they were part of the kit. The Fox shocks are a must.

      Helpful (6)

    Questions & Answers (14 answers)

    5 Top Rated Questions

    How does this keep the axles positioned correctly with only 6 flex arms and not 8? Do i need to purchase brake line extensions for this kit? Will this allow for 35" tire on stock rims.

    • Hello, at 3 inches of lift you only necessarily need to replace the front lower control arms and rear lower control arms to set proper caster angle. This kit also includes new rear upper control arms. Additionally the kit does include a brake like extension bracket so you will not need to purchase new brake lines. You should be able to fit 35 inch tires with this 3" lift kit on your JKU. The problem is 35 inch tires may be too wide for your factory rims, most 35 inch tires recommend at least a 8 inch wide rim or wider. I would recommend checking the suggested width on your 35" tire to determine if you can reuse your factory rims. Additionally to reuse your factory rims you may need to use wheel spacers additional because of the high backspacing on the factory rims. I would recommend calling in to our support line to discuss your situation and come up with some solutions.

    Helpful (2)

    With a 3" kit do i need to replace my drive shafts?

    • Every Jeep reacts a little differently to being lifted, but usually at 3" of lift a 4 door wrangler does not require replacing the driveshafts. We would suggest considering it in your budget to be safe though, incase your stock driveshafts fail after installing the Teraflex 3 in. Sport S/T3 Suspension w/ Fox Shocks due to the height increase.

    Helpful (0)

    Are the Fox Shocks included in this kit adjustable? (8-way tuning)

    • The Teraflex 3 in. Sport S/T3 Suspension w/ Fox Shocks will include the Teraflex-Tuned FOX 2.0 Reservoir Shocks, which are not adjustable.

    Helpful (0)

    Does the Falcon shocks work with this lift kit?

    • Yes, you can install the Falcon shocks with the Teraflex 3 in. Sport S/T3 Suspension as long as you purchase the shocks rated for 3" of lift.

    Helpful (0)

    Hey is there a complete 3 inch teriflex lift kit like this one that’s for two door jk or can this one fit

    • Great question! This kit is specifically designed for the 4 Door JK Models, I'll include the same kit but designed for a 2 Door:

    Helpful (0)
    Post Your Question
    9 More Questions
    Does this kit prevent death wobble in the front end 1 answer
    Could the springs that come with the kit be replaced with slightly shorter ones. I only need about 2 inches of lift. 1 answer
    I see two answers in regards to the rear track bar relocation bracket. Does this come with or without it? 1 answer
    Could you run 37 inch tiress with this lift kit? 1 answer
    Is this going to require me to get new front and rear drive shafts? 1 answer
    Does this need a replacement rear track bar or a replacement bracket? 1 answer
    Is a replacement rear track bar necessary for this lift? Would there be any benefits to getting an adjustable rear track bar for it? 1 answer
    Is there a rear track bar or a relocation bracket? 1 answer
    What sku shock fox come with this lift kit? 1 answer

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (2) 3" Front Springs
    • (2) 3" Rear Springs
    • (4) Teraflex-Tuned FOX 2.0 Reservoir Shocks
    • (4) SpeedBump Bumpstops
    • (1) Front Adjustable Trackbar
    • (6) Sport Flexarms
    • Hardware

    Tech Specs

    Will It Fit My Wrangler

    • JK Rubicon 4 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
    • JK Wrangler 4 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18

    4 Door Models Only

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