RockJock's Heavy Duty High Steer Knuckle Kit for JL Wrangler, JL Unlimited and JT Gladiator vehicles (with standard Sport width axle) replaces the aluminum factory knuckles and raises your tie rod 2 3/4 in. and your drag link 2 1/2 in.. Currectlync steering that is included in this kit features forged, organically shaped drag link for maximum up travel and a 42mm tie rod. All steering rod ends are forged steel. Additionally, kit includes fully integrated trac bar relocation and steering stabilizer shock mounting bracket that raises your trac bar 2 in. and corrects it's geometry as well as giving you a raised mounting point for your steering stabilizer shock that mounts it dramatically higher, up and behind the new tie rod location, to protect it from rocks. RockJock's fabricated steel tie rod clamp installs to provide and easy hook-up point for the other end of your shock. All other factory outer components retained with the new knuckles including outer axles, unit bearings, dust shields and brakes. The use of RockJock's RJ-9120FJLF forged, organically shaped front trac bar is also strongly encouraged, so that all components nest together for maximum up travel as engineered.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Gladiator | 2020 - Present | |
| Jeep | Wrangler | 2018 - Present |
| Vehicle | Jeep Gladiator JT (20–Present) or Jeep Wrangler JL / JLU (18–Present) |
| Brand | RockJock |
See It Installed
Install videos and build guides on our YouTube channel.
Watch more installs on YouTubeReviews from Google
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5 reviews
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Ajay Paynter
Mar 4, 2026
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Great company, who worked with me on shipping parts to arrive in time for a show. When I explained my concern they went above and beyond to make it happen. Quality of the parts is top notch.
RC
Ryan Colligan
Mar 4, 2026
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I have nothing but good things to say about Core 4x4. I have the crawler series on my JKU and we take it all over the place. These parts handle everything we throw at them.
MT
Marcus Torres
Jan 15, 2026
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Best control arms I have installed on any of my builds. After running every major manufacturer, Core 4x4 is on par or better than all the high-end companies at a fraction of the cost. Lifetime warranty is the cherry on top.
DW
Derek Whitfield
Nov 20, 2025
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Solid product, the lifetime warranty sealed the deal for me. Installed on my TJ and the ride quality improved noticeably. Shipping took a bit longer than expected but the parts were worth the wait.
JM
Jason Mitchell
Dec 8, 2025
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Installed the full kit on my XJ. Ride quality is night and day better than what I had before. The articulation on the trail is insane. These guys know what they are doing. Already recommended Core 4x4 to everyone in my club.