Dirt King 4130 Upper Control Arms for 4Runner (2025-2026)

Upgrade the front suspension on your 6th Gen 4Runner with the Dirt King 4130 Upper Control Arms for Toyota 4Runner (2025–2026). Designed specifically for lifted applications, these heavy-duty UCAs correct suspension geometry, improve articulation, and eliminate common issues found in factory control arms.

Built from 4130 chromoly tubing and engineered for strength, these upper control arms feature maintenance-free SilentSpin™ bushings and Probearing Pro 4 ball joints for smooth operation and long-term durability. Whether your 4Runner is a daily driver, weekend overland rig, or dedicated off-road build, Dirt King UCAs provide the strength and reliability needed for demanding terrain.

Designed to maintain proper alignment with 0–3 inches of lift, these arms also increase front suspension performance by adding approximately 1 inch of additional down travel compared to factory arms. Pair them with aftermarket coilovers such as King, Fox, Icon, Dirt King, and other performance suspension systems for maximum capability both on and off the trail.

Features

• 4130 Chromoly Construction: Built from high-strength chromoly tubing with reinforced gussets for exceptional durability in demanding off-road environments.
• Pro 4 Series Ball Joints: Forged SAE4140 housing with an induction-hardened ball stud and 76° of articulation for improved steering feel and long-term strength.
• SilentSpin™ Hybrid Bushings: Maintenance-free and greaseless bushings eliminate squeaks while allowing smooth articulation without the need for service.
• Geometry Corrected for Lifted Vehicles: Improves caster and pivot angles to restore proper alignment and handling on 4Runners with 0–3 inches of lift.
• Increased Suspension Travel: Provides approximately 1 inch of additional down travel compared to factory upper control arms for better off-road performance.
• Fully Rebuildable Design: All wear components are replaceable for long-term reliability and serviceability.
• Corrosion-Resistant Finishes: Durable black powder coat and zinc-plated hardware protect against rust, debris, and harsh environments.
• Professionally MIG Welded: Precision welding ensures structural integrity for aggressive off-road use.
• Preassembled for Easy Installation: Ships ready to install, reducing install time and eliminating guesswork.
• Made in the USA: Built and tested in the United States for quality you can trust.

Specifications

• Lift Compatibility: 0–3 inches
• Track Width: Stock
• Maximum Backspacing: 5.75 inches
• Minimum Wheel Size: 17 inches

Construction: 4130 Chromoly Steel

Note: Do not install with coil spacers combined with extended-length aftermarket shocks.

Includes

• Dirt King 4130 Chromoly Upper Control Arms
• Probearing SilentSpin Hybrid Bushings
• Heavy-Duty Probearing Pro 4 Ball Joints
• Ball Joint Caps
• Dirt King Sticker Pack

Fitment

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

This product is designed to pair with OEM and Dirt King components. Compatibility with other aftermarket suspension systems should be confirmed with the respective manufacturer.

If you’re lifting your 2025–2026 Toyota 4Runner, the Dirt King 4130 Upper Control Arms are a critical upgrade for maximizing suspension performance and reliability. With corrected geometry, maintenance-free bushings, and premium chromoly construction, these UCAs deliver smoother articulation, improved handling, and the durability needed for serious off-road use.