Upgrade your suspension with the Dirt King Billet Upper Control Arms for Toyota 4Runner (2025–2026). Precision-machined from 6061 aluminum, these premium upper control arms combine exceptional strength, improved suspension geometry, and a refined billet appearance that stands out under the hood of any 6th Gen 4Runner build.

Designed to correct factory suspension limitations, Dirt King billet UCAs improve caster settings and pivot angles to restore proper geometry on lifted vehicles. This results in better handling, increased articulation, and improved suspension travel when paired with Dirt King shocks or other aftermarket coilovers.

These upper control arms feature an adjustable inner pivot system available in two configurations to match your driving style. Choose the maintenance-free Probearing SilentSpin™ bushings for quiet, smooth operation and daily driving comfort, or opt for the ¾" chromoly rod ends for a firmer, performance-focused setup ideal for aggressive off-road use.

Both configurations include heavy-duty Probearing ball joints, engineered for durability in harsh environments while maintaining smooth steering performance. Built for strength, adjustability, and long-term reliability, these billet control arms are a premium suspension upgrade for any lifted 4Runner.

Features

Precision-Machined 6061 Billet Aluminum: High-strength aluminum construction provides excellent durability while maintaining a lightweight design and premium finish.
Optimized Suspension Geometry: Improved caster settings and redesigned pivot angles correct factory geometry issues caused by lifting your 4Runner.
Adjustable Inner Pivot System: Allows camber and caster adjustment to properly dial in alignment on lifted suspension setups.
SilentSpin™ Hybrid Bushings (Optional): Maintenance-free bushings with a polyurethane outer layer and self-lubricating composite core for quiet, smooth articulation.
¾" Chromoly Rod End Option: Performance-focused setup that provides a firmer suspension feel and increased responsiveness for aggressive off-road driving.
Heavy-Duty Probearing Ball Joints: Built for strength and long-term durability in demanding environments while maintaining smooth steering performance.
Improved Suspension Travel: Designed to allow increased lift and front suspension travel when paired with Dirt King shocks or other aftermarket coilovers.
Fully Rebuildable Design: All wear components are replaceable, allowing the arms to be serviced and rebuilt for long-term reliability.
CAD Designed & Engineered: Precision-engineered components ensure proper fitment and optimal performance.
Made for Easy Installation: Ships preassembled with ball joints installed to simplify the installation process.

Specifications

Lift Compatibility: 0–3 inches
Track Width: Stock
Maximum Backspacing: 5.75 inches
Minimum Wheel Size: 17 inches
Control Arm Material: 6061 Billet Aluminum
Ball Joints: Heavy-duty Probearing ball joints
Bushing Option: Probearing SilentSpin (maintenance-free, self-lubricating)
Rod End Option: Probearing ¾" chromoly with adjustment sleeve
Camber/Caster Adjustability: Yes
Rebuildable: Yes (all components replaceable)
Warranty: Limited lifetime warranty on arms, 1-year warranty on ball joints and bushings/rod ends

Includes

(2) Dirt King Billet Upper Control Arms (Left & Right)
Heavy-duty Probearing Ball Joints (Pre-installed)
Probearing SilentSpin Bushings or ¾” Chromoly Rod Ends (based on configuration)
Adjustment sleeve for camber and caster (rod end option)
Installation hardware
Detailed installation instructions

Fitment

Toyota 4Runner (2025–2026)
- 2WD
- 4WD

The Dirt King Billet Upper Control Arms for the 2025–2026 Toyota 4Runner deliver premium strength, improved suspension geometry, and precise adjustability for lifted builds. With precision-machined aluminum construction, rebuildable components, and configurable pivot options, these UCAs provide the durability, performance, and control needed for daily driving, overlanding, and serious off-road use.

Upper Control Arms

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