Dirt King 4130 Upper Control Arms – 2021+ Ford F-150
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Suspension upgrade for 2021–2025 Ford F-150 (2WD/4WD) — addresses squeaky bushings and alignment drift with maintenance-free SilentSpin™ bushings and heavy-duty Probearing Pro 4 ball joints. Adds roughly 1" of downward wheel travel versus factory arms and maintains proper alignment through 0–3" of lift. Preassembled and ready for installation.
- Pro 4 Series ball joints (SAE4140 forged housing, 76° articulation)
- SilentSpin Hybrid bushings — greaseless, maintenance-free
- Geometry-corrected design
- 4130 chromoly construction, fully rebuildable
- Corrosion-resistant finishes
- Made in the USA
Specs: 0–3" lift capacity · 76° ball joint articulation · 4.75" max backspacing · 17" min rim size · Stock track width · ~9.07 kg per arm
Not compatible with: STX models with short spindle, vehicles with Dynamic Bending Headlights, or vehicles with Continuously Controlled Damping (CCD).
