The Ultimate UCA Upgrade for Your 4th-Gen Tacoma

Built to fix the problems that every lifted Tacoma eventually faces—squeaky bushings, high-maintenance joints, and poor alignment geometry—the Dirt King 4130 Upper Control Arms deliver quiet operation, maximum articulation, and long-term durability. Whether you're commuting, overlanding, rock crawling, or hammering desert trails, these UCAs are engineered to perform.

Key Features

SilentSpin™ Hybrid Bushings (Maintenance-Free)

• Greaseless design — no zerk fittings

• Zero squeaks, zero maintenance

• Free-spinning articulation for improved suspension movement

Pro 4 Series Ball Joints

• Forged SAE4140 housing

• 76° of articulation for increased wheel travel

• Induction-hardened ball stud for extreme strength

• Sealed to keep out dust and debris

• Finished with anodized ball joint caps

4130 Chromoly Construction

• High-strength tubular design

• Reinforced gussets for added rigidity

• Professionally MIG-welded

• Black powder-coat finish for corrosion resistance

Geometry-Corrected for Lifted Tacomas

• Maintains proper alignment across 0–3” of lift

• Adds approx. +1” of down travel over factory

• Optimized caster for improved on-road stability and off-road control

Fully Rebuildable & Made in the USA

• All wear components are replaceable

• Built, tested, and assembled in the USA

• Delivered preassembled for a fast, hassle-free install

What’s Included

• 4130 chromoly upper control arms (pair)

• Probearing SilentSpin™ hybrid bushings

• Heavy-duty Probearing Pro 4 ball joints

• Ball joint caps

• Zinc-plated hardware

• Dirt King sticker pack

Fitment

Vehicle Compatibility:

• 2024–2025 Toyota Tacoma (2WD / 4WD)

• Works with OEM suspension and Dirt King shocks

• Compatible with most aftermarket coilovers (King, Fox, Icon, etc.)*

Wheel & Tire Requirements:

• Maximum backspacing: 5.75"

• Minimum wheel size: 17"

Note: Do not combine coil spacers with extended-length shocks.

Why Choose Dirt King UCAs?

• Quiet, maintenance-free performance

• Corrected suspension geometry for lifted trucks

• Increased travel for better off-road capability

• Stronger, smoother, and more durable than OEM

• Perfect for daily drivers and hardcore off-road builds

Specs at a Glance

• Amount of Lift Supported: 0–3”

• Track Width: Stock

• Construction: 4130 chromoly tubing

• Bushings: SilentSpin hybrid bushings

• Joints: Probearing Pro 4 ball joints

• Finish: Black powder coat / zinc-plated hardware

• Weight: ~9.53 kg (pair)

Build With Confidence

Designed, welded, and assembled in the USA, the Dirt King 4130 UCAs are built to handle real off-road abuse—without sacrificing daily comfort. If you want reliability, quiet operation, and improved performance for your 4th-gen Tacoma, this is the upgrade.