Billet Upper Control Arms

The Dirt King upper control arms for the Silverado 1500 and Sierra 1500 are precision-machined from 6061 aluminum, delivering exceptional strength, durability, and a premium billet finish. Engineered specifically to enhance GM1500 upper control arms geometry, these UCAs improve caster, increase articulation, and create the clearance needed for additional front lift and extended suspension travel when paired with Ride Shocks, Fox Shocks, or King Shocks.

A major highlight of these Dirt King arms is the adjustable inner pivot system, available in two configurations:

Probearing SilentSpin bushings — a maintenance-free option that provides quiet, smooth, and comfortable performance on and off the pavement.

¾” chromoly rod ends — a performance-oriented setup delivering a firmer connection with fully adjustable camber and caster for precise alignment tuning.

Both versions utilize heavy-duty Probearing ball joints to ensure long-term reliability and consistent strength. Designed for straightforward installation and built to handle demanding off-road use, these Silverado upper control arms from Dirt King are an ideal upgrade for any Silverado 1500 or Sierra 1500 owner looking to boost suspension performance, durability, and overall ride quality.