Upgrade your 07-18 JK/JKU front suspension with purpose-built adjustable Hiem Joint Control Arms. Designed for rugged off-road use, these front upper and lower arms combine strength, precise alignment, and long-term durability to keep your rig tracking true through rough terrain.

Why these are different

• Heavy-duty build with.250" DOM tubing on both upper and lower arms for exceptional rigidity and resistance to flex, twist, and bending under aggressive articulation.
• Two distinct tube sizes: 2".250" wall DOM lowers paired with 1-1/4" Hiems, and 1.5".250" wall DOM uppers paired with 7/8" Hiems. This combination delivers optimized strength where you need it most while maintaining balanced flex characteristics.
• Fully adjustable for up to 7" of lift—allowing you to dial in pinion angles, caster, and toe to preserve steering response as you climb higher off-road.
• Factory-width mounting and standard bolts provide a straightforward, drop-in installation without patient re-engineering or exotic hardware.
• Lifetime guarantee backed reliability you can depend on for the long haul.

Key specifications at a glance

• Front upper control arms: 1.5".250" wall DOM with 7/8" Hiems
• Front lower control arms: 2".250" wall DOM with 1-1/4" Hiems
• Fits 2007–2018 JK and JK Unlimited (JKU) models
• Fully adjustable to accommodate up to a 7" lift
• Maintains factory mounting widths and bolt sizes for easy installation
• Protected by a lifetime guarantee

Who this is for

Ideal for enthusiasts who push their JK/JKU rigs beyond stock suspension—rock crawlers, overlanders, and long-travel adventurers who need reliable steering geometry as OEM components sag or wear. If your build includes bigger tires, aggressive articulation, or chassis setups that demand precise camber and caster tuning, these arms deliver the control and durability you’re after.

What problems they solve

• Eliminate binding and misalignment when suspensions cycle through large travel
• Preserve steering responsiveness and tracking on uneven terrain
• Enable accurate alignment settings after heavy lift or articulation changes
• Offer a robust, long-term solution with a lifetime guarantee instead of frequent replacements

Tips for installation and use

With factory width mounting, you can expect a straightforward installation compatible with standard parts. After installation, it’s wise to recheck alignment to dial in caster and camber for your tire setup and driving style. Regular inspection of the Hiem joints will help maintain smooth articulation and extend service life.

Questions about fitment or installation details? Reach out with confidence—our team is ready to assist. Email bkfabworks17@yahoo.com or call 1-423-658-8212.