Aluminum Mid Arm Kit Lowers Only for Jeep Wrangler JK 2007-2018
This lowers-only kit swaps the four factory lower control arms on a 2007-2018 Jeep Wrangler JK or JKU for polished 7075-T6 aluminum links with RockKrawler joints. Lower arms live in the line of fire on a JK: they hang below the frame, drag across ledges, and rust wherever rocks strip the paint. Replacing them with aerospace-grade aluminum gets you adjustable geometry, rebuildable joints, and a lighter axle without paying for a complete kit, and your existing upper arms stay put. Artec proved the alloy over roughly five years of ARTECON rock crawling and daily-driver testing before putting it under customers' Jeeps.
Features
- Four 2.0" OD 7075-T6 polished aluminum lower links, front and rear
- Eight RockKrawler joints, 4 RH and 4 LH, 1.25"-12 tpi with 9/16" bore
- Eight matching 1.25"-12 tpi jam nuts to lock in length settings
- Threaded ends adjust caster and axle position on the vehicle
- High-strength 7075-T6 alloy trims real weight versus steel tubing
- Corrosion-proof polished finish, no repainting after trail seasons
- Bolts to the factory frame and axle mounting points
Fits both 2-door JK and 4-door JKU models, 2007-2018. Install one arm at a time: measure the factory arm center-to-center at the bushings, thread the new link to match, torque to spec, then align and re-check hardware after 50 miles. Ready for the complete set? The full JK Aluminum Mid Arm Kit adds the upper hardware, the Rear Only kit splits the job differently, or compare the JKU Aluminum Long Arm Kit for longer-travel geometry. Browse everything in our control arms collection.
Specifications
Aluminum Mid Arm Kit Lowers Only for Jeep Wrangler JK 2007-2018 FAQs
Does this kit replace all four lower arms?
Yes. You get four 2.0" OD 7075-T6 polished aluminum links covering the front and rear lower positions, plus eight RockKrawler joints and eight jam nuts. Your upper control arms — factory or aftermarket — are retained.
Will it fit my 2-door JK?
Yes. The kit fits both the 2-door JK and 4-door JKU from 2007-2018, bolting to the factory lower control arm mounting points on the frame and axles. No bracket changes are needed for a straight lower-arm swap.
Are the arms adjustable after installation?
Yes. The RockKrawler joints thread onto the 1.25"-12 tpi link ends and lock with jam nuts, so you can fine-tune length on the vehicle to set caster and axle position. Measure your factory arms center-to-center as the starting length, then align and re-torque after the first 50 miles.
Multi-column
Join Our Community
For all things NVMOS, check us out on Instagram and Facebook!
Financing Available
Buy now and pay later with Affirm.
Contact Us
Have a question? Just send us an e-mail at support@nvmos.com
