JK ALUMINUM Mid Arm Kit (Front 3-link)

The JK Aluminum Mid Arm Kit (Front 3-link) swaps the heavy steel control-arm links on your Jeep Wrangler JK for machined 7075-T6 aerospace-grade aluminum, cutting a meaningful amount of unsprung and rotating weight while keeping the strength to survive hard rock crawling. This configuration sets the front up as a three-link, and the links thread onto rebuildable Rock Krawler Krawler Joints so ride height and pinion angle stay fully adjustable.

Key Features

• Lower links machined from 2.0" OD 7075-T6 aerospace-grade aluminum for a large strength-to-weight advantage over steel tubing
• Rock Krawler Krawler Joints at every link end with wrench flats and matching jam nuts for easy on-vehicle adjustment
• Threaded ends let you fine-tune link length to dial in caster, pinion angle, and axle centering
• Aluminum construction resists rust, so there is no repainting after the trail like bare steel links
• Direct replacement for the factory-style steel Rock Krawler mid-arm links, with the front converted to a 3-link
• Field-tested for years in the ARTECON and other extreme-use builds under both daily driving and heavy-duty crawling

Fitment & Compatibility

Fits the Jeep Wrangler JK and JKU (2007-2018). The kit is designed to run with Artec's 1-ton axle swap and factory-style 4-link geometry using Daystar or Johnny Joint bushings. To complete the full front 3-link conversion you will also need the JK HD Crossmember with Link Mounts, the JK Front 3-Link Frame Mount Bracket, and an Adjustable Truss Upper Link Mount, which are sold separately.

Specifications

What's in the Box

• 4 × 2.0" OD 7075-T6 polished aluminum lower links
• 4 RH and 4 LH 1.25"-12 tpi x 9/16" Rock Krawler joints with 4 RH and 4 LH 1.25"-12 tpi jam nuts
• 3 RH and 2 LH 7/8"-14 tpi x 9/16" Rock Krawler joints with 3 RH and 3 LH 7/8"-14 tpi jam nuts
• 1 LH Rock Krawler 7/8" UCA U-bracket with stud

Frequently Asked Questions

Does this fit both 2-door and 4-door JK Wranglers?
Yes. It is built for the 2007-2018 Jeep Wrangler JK and 4-door JKU. The front is set up as a three-link in this version.

What do I need to finish the 3-link conversion?
Plan on the JK HD Crossmember with Link Mounts, the JK Front 3-Link Frame Mount Bracket, and an Adjustable Truss Upper Link Mount, all sold separately.

Can aluminum links really hold up to rock crawling?
Yes. The 7075-T6 links have been run for years in the ARTECON test rig and hard-use builds under both crawling and daily driving.

Will these replace my steel Rock Krawler links?
Yes. They are a direct swap for the steel kit links and use Rock Krawler Krawler Joints, so no re-bracketing is required to change over.

Are the links adjustable after install?
Yes. Every end is threaded with wrench flats and jam nuts, so you can set length on the vehicle and check alignment before final torque.