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SKU: LK7215

Aluminum Mid Arm Kit for Jeep Wrangler JK 2007-2018

$2,309.99


The JK Aluminum Mid Arm Kit replaces the control-arm links front and rear on a 2007-2018 Jeep Wrangler JK or JKU with machined 7075-T6 aerospace-grade aluminum, dropping unsprung weight at all four corners without giving up the strength hard crawling demands. Every link end rides on a rebuildable Rock Krawler Krawler Joint with jam nuts, so ride height, caster, and pinion angle stay adjustable on the vehicle instead of locked in at install. It is also confirmed compatible with Artec's 1-ton axle swap kits, making it the natural link set for a JK graduating to one-ton axles.

Features

  • Front and rear mid-arm link set machined from 7075-T6 aerospace-grade aluminum
  • Four 2.0" OD polished aluminum lower links under the axles
  • Rock Krawler Krawler Joints (1.25"-12 tpi lowers, 7/8"-14 tpi uppers) with jam nuts and wrench flats at every end
  • Two LH Rock Krawler 7/8" UCA U-brackets with studs included
  • Threaded ends fine-tune link length for alignment and axle position
  • Rust-proof aluminum ends the repaint cycle that bare steel links demand
  • Direct swap for factory-style steel Rock Krawler mid-arm links

Fits the 2-door JK and 4-door JKU, and works with Artec's 1-ton swap kit when running the Daystar or Johnny Joint factory 4-link options. Completing a full mid-arm conversion typically calls for the JK HD Crossmember with Link Mounts and an Adjustable Truss Upper Link Mount, sold separately. Prefer a single-upper front? See the JK Aluminum Mid Arm Kit (Front 3-Link), or split the job with the front-only and rear-only kits in our control arms collection.

Specifications

  • Link material: 7075-T6 aerospace-grade polished aluminum
  • Lower links: 4 x 2.0" OD
  • Lower joints: Rock Krawler 1.25"-12 tpi x 9/16" (4 RH, 4 LH) with jam nuts
  • Upper joints: Rock Krawler 7/8"-14 tpi x 9/16" (4 RH, 2 LH) with jam nuts
  • Includes: 2 LH Rock Krawler 7/8" UCA U-brackets with studs
  • Compatibility: Artec 1-ton swap kit with Daystar or Johnny Joint 4-link options
  • Fitment: Jeep Wrangler JK / JKU 2007-2018, front and rear
  • Part number: LK7215

Aluminum Mid Arm Kit for Jeep Wrangler JK 2007-2018 FAQs

Does this work with Artec's 1-ton axle swap kits?

Yes. Artec confirms compatibility with its JK 1-ton swap kit as long as you choose the Daystar or Johnny Joint factory 4-link bracket options. That makes this kit the matching link set when you move a JK onto one-ton axles.

Is anything else needed for a full mid-arm conversion?

Depending on your build, plan on Artec's JK HD Crossmember with Link Mounts and an Adjustable Truss Upper Link Mount, both sold separately. The links themselves bolt in as a direct replacement for factory-style steel Rock Krawler mid-arm links, so a straight link swap needs no extra bracketry.

How do the aluminum links hold up compared to steel?

The 7075-T6 aerospace alloy went through years of testing in Artec's ARTECON rig under extreme rock crawling and daily driving. It saves considerable weight over steel tubing, and unlike bare steel links it never rusts, so there is no repainting after every hard season.

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