Best 6th Gen 4Runner Upper Control Arms

[K2Runner]

Top Upper Control Arm Options for the 2025+ 4Runner​

If you’re planning to lift your new 4Runner, upper control arms are one of those upgrades you’ll end up thinking about sooner or later. The stock arms do fine at factory height, but once you crank things up a couple of inches, alignment gets tricky and steering can start to feel a little off. A good set of UCAs fixes all that and adds strength, more travel, and better control on rough roads.

Why Upgrade Your Upper Control Arms​

• Keeps your alignment and caster dialed in after a lift
• Smoother steering and more confidence on and off the trail
• Stronger joints and materials that can actually handle hard use

Dirt King Billet UCAs​

High-end upper control arms built for strength and precise alignment correction on lifted 4Runner.

• Rebuildable, USA-made construction
• Precision-welded 4130 chromoly tubing

Check Price Here: https://dirtking.com/collections/25-4runner/products/4130-upper-control-arms-toyota-4runner

Peak Suspension Tubular UCAs​

Tubular chromoly design with sealed ball joints. A solid balance of strength, price, and everyday drivability.

• Chromoly tubing with powder coat finish
• Sealed ball joints, low maintenance
• Improves alignment on lifted trucks

Check Price Here: https://www.peaksuspension.com/product/2025-toyota-4runner-tubular-upper-control-arms/

JBA High Caster UCAs​

Tubular steel arms with high-caster geometry that simplify alignment after a lift. Ball-joint design keeps maintenance low.

• Tubular steel construction
• Fits 1–3.5" lifts

Check Price Here: https://jbaoffroad.com/jba-std-hc-upper-control-arms-for-toyota-4runner-2025-plus

Ironman 4x4 Chromoly UCAs​

Durable chromoly arms with sealed bushings and ball joints. Great match for daily drivers or trail rigs using 2–3" lifts.

• Chromoly steel tubing
• Sealed, low-maintenance joints

Check Price Here: https://www.ironman4x4.com/products...-arms-for-toyota-4-runner-2025-uca119s4runner

Total Chaos UCAs​

4130 chromoly tubular arms built specifically for the 6th Gen. They use uniballs for articulation and handle 2–3" lifts with ease.

• Chromoly tubing with uniball pivots
• Extended travel–ready design

Check Price Here: https://www.chaosfab.com/product/20...6th-Gen-Stock-Length-Upper-Control-Arms-96524

Westcott Designs Billet UCAs (Pre-Order)​

CNC-machined billet aluminum with fully adjustable pivots. Built for strength, precision, and high-performance suspension setups.

• Billet aluminum with uniball and heim joints
• Adjustable geometry for custom alignment

Check Price Here: https://westcottdesigns.net/product/6th-gen-4runner-heavy-duty-upper-control-arms/

Final Thoughts​

If you’re lifting your 4Runner, UCAs are one of the first upgrades worth doing. Westcott and Total Chaos lead for premium performance, JBA offers reliable alignment correction, and Ironman gives solid strength at a reasonable price.

Let me know if I missed any! What UCA's are y'all running?

 

[RAD 4RUNNER]

I run the Peak Suspension UCA's and so far so good. I went with these because they're going to look awesome with the King Shocks I want.