Description
Dirt King 4130 UCA’s – More Travel. More Control. More Confidence.
Built for high-performance off-road use, the Dirt King 4130 Upper Arms are a premium upgrade over our standard arms-equipped with Probearing Pro 4 Series Ball Joints that outperform traditional uniballs and Moog joints in strength, articulation, and steering control.
These arms are engineered for aggressive driving and rugged terrain, offering up to 38° of articulation for maximum suspension travel. The 4140 Pro 4 ball joints feature an induction-hardened ball stud and sintered bearings, delivering unmatched side-load strength and a smoother on-road steering feel.
If you’re comparing to the Dirt King 991 arms, this version offers significantly enhanced joint strength, travel range, and steering performance-making it ideal for those who demand more from their build. Combined with corrected suspension geometry, SilentSpin bushings, and 4130 chromoly construction, these arms are ready to handle whatever you throw at them.
Specifications
- Amount of Lift: Allows for 0-3″ of lift
- Track Width: Stock
- Maximum Backspacing: 4.75″
- Minimum Rim Size: 17″
Wheel Travel / Lift
These control arms provide maximum down travel compared to stock upper arms and must be paired with aftermarket coilover shocks. Compatible with Dirt King, King, Fox, Bilstein, ADS, Icon, Eibach, and other OEM replacement coilovers.
Note: Do not install with coil spacers combined with extended-length aftermarket shocks.
What’s Included
- 4130 Chromoly upper control arms
- Probearing SilentSpin bushings
- Probearing Pro 4 Series Ball Joints
- Ball joint caps
- Dirt King sticker pack
Features
- Pro 4 Series Ball Joints – Forged SAE4140 housing, 38° of articulation, and induction-hardened ball stud for maximum strength and smoother steering feel
- SilentSpin 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
Compatibility
2005-2023 Toyota Tacoma 2WD / 4WD
Additional fitment info from vendor. (Please verify and see fitment disclaimer below)
- Toyota Tacoma 2005-2023 All
