4130 Tubular Ball Joint Upper Control Arms, Silent Spin Bushings

If you drive a 2024 or newer Toyota Tacoma or 2025 or newer 4Runner and are ready to take your suspension to the next level, Dirt King upper control arms are the perfect upgrade. These UCAs were built to solve the common problems found with Factory Series components—squeaky bushings, high-maintenance joints, and poor alignment geometry after adding a lift. Whether your Tacoma is set up for daily driving, weekend trail runs, overlanding, or desert exploration, these arms deliver the performance and reliability you need.

Dirt King upper control arms come equipped with maintenance-free SilentSpin™ bushings that eliminate grease fittings and unwanted noise, along with heavy-duty ProBearing Pro 4 ball joints for superior strength and articulation. The sealed design keeps out dirt and debris, while anodized caps provide long-lasting protection. Engineered to maintain proper alignment with 0–3" of lift, these UCAs also add about an inch of extra down travel—perfect for pairing with high-performance coilovers from Ride Shocks, Fox, King, or other aftermarket options.

• Pro 4 Series Ball Joints – Forged SAE4140 housing, 38° of articulation, and induction-hardened ball stud for maximum strength and smoother steering feel
• SilentSpin Hybrid Bushings – Maintenance-free, greaseless, and engineered for quiet, free-spinning articulation
• Geometry Corrected – Improved caster and pivot angles deliver better handling and control with up to 3” of lift
• 4130 Chromoly Construction – Built with high-strength tubing and reinforced gussets for extreme durability
• Fully Rebuildable Design – All wear items are replaceable for long-term reliability
• Corrosion-Resistant Finishes – Zinc-plated hardware and black powder coat protect against the elements
• Professionally MIG Welded – Ensures structural integrity for demanding off-road use
• Preassembled – Quick, hassle-free installation with no guesswork
• Made in the USA – Built with pride and quality you can trust