Made in USA
Orem, Utah
Lifetime Guarantee
Unconditional
10 Colors
In-house powder coat
Fully Adjustable
0-6" of lift
3 X-Series Options
Only Core 4x4
RockJock's Front 2WD Beam Axle Housing Johnny Joint Kit for TJ Wrangler, LJ Unlimited, XJ Cherokee, MJ Comanche and ZJ Grand Cherokee vehicles replaces the front upper control arm bushings Johnny Joint rod ends to get maximum articulation out of your suspension! This kit includes 2 of our 1 in. thick flame-cut steel uprights for the tube side, with the Johnny Joint already installed. This kit has you cut off the top of the stock upper control arm brackets that are on the beam axle and install the new RockJock pieces into the existing bracket bases. You then weld the RockJock pieces to the existing bracket bases. This allows for no welding to be done on the tube, resulting in no warpage of the tube. This kit requires cutting and welding equipment for installation! NOTE: this kit is for use on any factory 2WD beam only!
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Cherokee | 1984 - 2001 | |
| Jeep | Comanche | 1986 - 1992 | |
| Jeep | Wrangler | 1997 - 2006 | |
| Jeep | Wrangler | 2004 - 2006 |
| Brand | RockJock |
Reviews of Core 4x4
5.0
★
★
★
★
★
132 reviews
N
Nick
Sep 24, 2025
★
★
★
★
★
I have a 2016 RAM 1500 Crew Cab and I replaced the rear upper and lower control arms also the pan hard track bar and also the sway bar and links for the rear with all I had the articulating bushings. The vehicle now has no body role. They are absolutely incredible if you get the control arms you gotta get the CORE 4 x 4sway bar end links don’t don’t try and be cheap and get Moog or something else you got to get articulating bushings get the core 4 x 4 ones they are the best. My truck drives now through the canyons like a BMW. I have Fox high-performance shocks on there as well with all the CORE 4 x 4 suspension parts and they are amazing. Well worth the money I would highly recommend anybody thinking about CORE 4 x 4 go with CORE 4X4 and if you can go with their articulating bushings, they’re unbelievable drives better now than my Escalades. Well planted no body role and smooth on the Highway unbelievable the difference they all made!!
THANKS AGAIN CORE 4x4!!!!
HK
Harold Kruder
Mar 23, 2024
★
★
★
★
★
I needed some parts and had to replace 1 lower control arm and their customer service is great. Helped with answering my questions and got parts shipped quickly.
RD
Reagan D'mello
Dec 23, 2025
★
★
★
★
★
Love the product. Excellent customer support 👍🏽 …
JJ
Jason Jukich
Jul 26, 2025
★
★
★
★
★
Fast shipping, excellent communication, and awesome products
SC
Singer Heating and Cooling
Mar 25, 2018
★
★
★
★
★
These guys are great. You can get them on the phone for support. This important and is not always the case with other custom parts builders. Their control arms are bomb proof and offer plenty of options. You can get real genuine Currie Johnny joints without paying the price for Currie arms.
J
Justin
Mar 24, 2021
★
★
★
★
★
Small business, family owned, made in the USA, lifetime warranty. Purchased Tier 3 control arms and rear track bar for a 2006 Jeep LJ. Simple website and easy to contact over phone and email. I had some technical questions and they were happy to answer them. They allow local pickup and were built to order same week. The order was wrapped and ready when I walked in and even gave a tour of the shop. They abrasive blast all raw materials to achieve a better surface profile for powdercoat to adhere and create a smooth, durable finish. I also noticed several CNC machines and a robotic welder they use for all their parts. A small outfit with a robotic welder? Their concern for quality is obvious and it shows in the parts they make. Very impressed. Happy to do business with these guys.
GC
Grant Chaisson
Jun 26, 2025
★
★
★
★
★
These guys are awesome!! They have helped me build multiple jeeps from zjs to mjs and now with my lj build they all ways impress.
There products are the best on the market in my eyes. The best part about it all is it's all made right here in american and shipped anywhere in the world 🌎 .
Don't think twice when your looking for control arm or lift kits for your vehicle if these guys sell it BUY IT!!!
EC
Eric Cox
Jul 26, 2025
★
★
★
★
★
Prompt, professional, and courteous service! Quality parts and broad assortment of products to suite your 4x4 needs:)
D
Danny
Oct 24, 2025
★
★
★
★
★
Outstanding customer service to match the high quality parts. This is the go-to company.
FS
Fernando Salazar
Aug 25, 2025
★
★
★
★
★
Great quality control arms and great customer service. Korby has been a great help at answering my questions on some issues I’ve been having with installation!
Your Dynamic Snippet will be displayed here...
This message is displayed because youy did not provide both a filter and a template to use.
Specifications
| Brand | RockJock |