KSP PERFORMANCE Front Upper Control Arms for Silverado/Sierra — 2–4" Adjustable UCAs with 3‑Piece Ball Joints & Rubber Bushings

KSP PERFORMANCE Front Upper Control Arms are a heavy-duty, adjustable replacement set engineered to restore correct alignment and improve front-end stability for 2019–2026 Chevy Silverado 1500 and 2019+ GMC Sierra 1500 trucks with 2–4" lifts.

These aftermarket upper control arms (UCAs) are built from CNC-formed thick-walled steel, TIG-welded at key stress points and finished with a durable powder coat to resist corrosion. Each arm includes a high-frequency heat-treated ball pin design and superior rubber bushings to match factory ride feedback while increasing strength and ride predictability after a lift. The arms come with three-piece ball joints and an adaptive ride control bracket for direct-fit installation on many lifted Trail Boss, AT4 and AT4X applications without cutting.

How do these UCAs improve handling after a suspension lift?

Raising a truck alters suspension geometry and can introduce poor caster and uneven tire wear; these UCAs are adjustable to correct those angles. They restore proper joint alignment and provide more consistent steering response, which helps the truck track straighter and wear tires more evenly.

• Adjustable length to dial in caster correction for 2–4" lifts
• Optimized pipe thickness reduces flex under load
• Factory-like rubber bushings preserve steering feel
• Three-piece ball joints for robust articulation and serviceability

What materials and manufacturing details make these arms more durable?

The arms use alloy steel with CNC machining and high-frequency heat treatment on the ball pins to increase tensile strength versus stock arms. TIG welds are applied at structural joints to minimize failure points, and a professional powder-coat finish helps prevent rust on road-exposed surfaces.

• Thickened tubing formed by CNC for consistent wall thickness
• Heat-treated alloy ball pins for greater shear strength
• TIG welding at high-stress areas for improved fatigue life
• Powder coat finish to extend corrosion resistance

Will these control arms work with my Trail Boss or AT4 model?

They are designed to fit 2019 and newer Silverado 1500 and 2019+ Sierra 1500 trucks, including Trail Boss, AT4, and AT4X variants that already have about 1.5–2" of factory lift. For lifts extending to 2–4", these UCAs provide the necessary adjustability and mounting provisions for a direct or minimally modified installation.

• Compatible with many Trail Boss/AT4/AT4X trucks with up to 2" factory lift
• Engineered for additional 2–4" aftermarket lift ranges
• Includes adaptive ride control bracket to avoid cutting on many installs
• Check vehicle year/make/model fitment before purchase

How should I care for these control arms after installation?

New ball joints are factory-lubricated and typically don’t require extra grease within the first year, but periodic inspection and routine maintenance extend service life. Keep fasteners torqued to spec and inspect bushings and joints for play, especially after off-road use or heavy hauling.

• New joints pre-lubricated; no grease needed within first year
• Inspect torque on mounting hardware after initial break-in miles
• Check bushings and joint play periodically for safety
• Avoid aggressive impacts to extend weld and tube longevity

Who is this product intended for: This UCA set is aimed at Silverado and Sierra owners upgrading suspension height or replacing worn factory arms who want a stronger, adjustable solution that preserves ride feel. It’s a good choice for owners installing 2–4" lifts, drivers who tow or carry heavy loads, and people who want to correct steering geometry for improved tire life and more predictable handling. If you’re unsure about fitment, verify your truck’s year, make and model against the product listing and contact KSP PERFORMANCE for fitment assistance or warranty support.