The Artec JL Aluminum Mid Arm Kit is a complete lower-and-upper link upgrade for the Jeep Wrangler JL, built around polished 7075-T6 aluminum lower links and RockKrawler joints. Artec developed and abused these 7075 aluminum links in their ARTECON over roughly five years to confirm they handle extreme rock crawling and daily driving while shedding weight versus steel.
Key Features
- Four 2.0" OD 7075-T6 polished aluminum lower links
- Two RockKrawler solid steel front upper control arms with joints
- Lower joints: 4 RH and 4 LH RockKrawler, 1.25"-12 tpi with 9/16" hole
- Upper joints: 4 RH and 2 LH RockKrawler, 7/8"-14 tpi with 9/16" hole
- Complete jam nut sets: 1.25"-12 tpi (4 RH, 4 LH) and 7/8"-14 tpi (4 RH, 4 LH)
- 7075-T6 lowers for a strong, lighter arm than steel, proven in ARTECON testing
Fitment & Compatibility
Fits the Jeep Wrangler JL and JLU (2018-present). This is the full kit — front and rear lower links plus the front upper control arms — and it uses the factory frame and axle mounting locations, replacing the OEM control arms.
Specifications
| Specification | Detail |
|---|---|
| Lower links | 4 x 2.0" OD 7075-T6 polished aluminum |
| Front upper arms | 2 RockKrawler solid steel with joints |
| Lower joints | RockKrawler 1.25"-12 tpi, 9/16" hole (4 RH, 4 LH) |
| Upper joints | RockKrawler 7/8"-14 tpi, 9/16" hole (4 RH, 2 LH) |
| Jam nuts | 1.25"-12 tpi and 7/8"-14 tpi sets |
What's in the Box
- 4 x 2.0" OD 7075-T6 polished aluminum lower links
- 2 x RockKrawler solid steel front upper control arms with joints
- 4 RH / 4 LH 1.25"-12 tpi x 9/16" hole RockKrawler joints and jam nuts
- 4 RH / 2 LH 7/8"-14 tpi x 9/16" hole RockKrawler joints, plus 4 RH / 4 LH 7/8"-14 tpi jam nuts
Frequently Asked Questions
What does the full kit include over the lowers-only version?
In addition to the four 7075-T6 lower links, the full kit adds the two RockKrawler solid steel front upper control arms with their joints and jam nuts.
Which Jeep does it fit?
The Jeep Wrangler JL and JLU (2018-present), using the factory control arm mounting points.
Why mix aluminum lowers with steel front uppers?
The 7075-T6 aluminum lowers cut weight where it helps articulation, while the RockKrawler solid steel front uppers handle the loads at the upper mounts.
Are the arms adjustable?
Yes — the RockKrawler joints thread onto the links and are locked with the included jam nuts, allowing length adjustment for setup.
On a tighter budget? The JL Aluminum Mid Arm Kit - Lowers Only covers just the lowers, or compare the JL/JT Long Arm Upgrade for a longer-travel geometry.
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