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
Drilling is required to allow for the insertion of the tapered sleeve included in this kit. Features include 1.3 in. diameter solid forged steel construction, flipped end for high mounting, larger forged, greasable rod ends, premium jam nuts and adjuster, the flipped drag link’s tapered sleeve and the system is painted black, so it's ready for install right out of the box! This easy to install kit only requires drilling of the one hole, no other modifications or machining to any part of the vehicle are necessary! On an entirely separate note, if you happen to be overseas and working with a right hand drive vehicle – this drag link will bolt directly onto a RHD vehicle in the RHD vehicle’s stock configuration. You would then discard the tapered sleeve that comes in this kit.
| Brand | RockJock |
Reviews of Core 4x4
5.0
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132 reviews
RC
Robert C
May 27, 2025
★
★
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Fantastic products! Outstanding performance!! Absolutely the best customer service!! You will not be disappointed!
SC
Singer Heating and Cooling
Mar 25, 2018
★
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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.
MG
Morgan Griffith
Mar 25, 2018
★
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I met a couple of the Core 4x4 guys at the Salt Lake Offroad Expo and decided to try them out after noticing one of my control arm bushings was disintegrated. I called to discuss parts on Thursday and I was leaving for a trip on Saturday. These guys built my control arms and had them ready to be picked up Friday, 24 hours later. The parts seem to be great quality and they charged me nothing extra to have them painted. These guys were extremely helpful and without them my trip probably would have been cancelled. looking forward to testing out the arms on my next trip to Moab.
BW
Brian Wadsworth
Jun 26, 2025
★
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Amazing product! Shipping was quick, packaging was great and support was outstanding!!
EC
Eric Cox
Jul 26, 2025
★
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Prompt, professional, and courteous service! Quality parts and broad assortment of products to suite your 4x4 needs:)
AL
Andrew LaFave
May 27, 2025
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I am really please with this company. Great product, i had an issue with a couple of the jonnhy joint bushings, they explained what had caused it and how to fix it. Within hrs of receiving my inquiry, i had heard back with the required info I needed. A couple hrs later problem was fixed and ready for the trail again. They care about heir product and their customers. Thanks crew, you rock
DR
David Rogers
Aug 25, 2025
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Ive had the front adjustable control arm kit in bright green for my 1996 ZJ.
Ive had the kit for about a year now and i have to say, im extremely impressed, over 1000 miles off-road and roughly 20,000 miles on the highway. These control arm kits for any vehicle built by core 4x4 are well worth the money, just be aware thereight be some minor scatches or chips from shipping ( but who should care about that if you're beating the crap out of em' they way they were built and designed for)
CW
Cody Whitlock
Sep 24, 2025
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10/10 overall experience, shipping, customer service, and such a great product!
RH
Rex Hodges
Jun 26, 2025
★
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After ordering an upper and lower adjustable control arm kit manufactured by CORE 4X4 from a jeep parts distributor who's intials are E.T., they came with 3 of the threaded ends missing. After over 2 months of phone calls and emails to this E.T. company nothing was resolved. I finally decided to call CORE 4X4 myself and tell them my dilemma. I spoke with a very personable and professional gentleman named Korby, who is one of CORE 4X4's representatives, after a brief discussion of what I went thru he simply asked me for a picture and some measurements and the items I was missing and asked if I could cover ONLY the cost of shipping and I had my missing parts in exactly 1 weeks time. This company not only builds all it's parts in the U.S.A., they stand behind their products with great customer service and life time warranty. My experience with this company and their Rep Korby was fantastic. I would definitely recommend CORE 4X4 to anyone who needs parts for any 4x4 projects. You just can't beat their quality and service.
Rex Hodges
Valparaiso, Indiana
SH
Shawn Hooten
Apr 27, 2025
★
★
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Great products, shipped the next day during a big sale event. Core 4x4 gets it right and gets it done! Thank you all.
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Specifications
| Brand | RockJock |
