ILONPA Front Upper Control Arms with Lower Ball Joints 4pc Set — Forged Steel, Direct-Replace for GM Trucks & SUVs

ILONPA front upper control arms with lower ball joints are a forged-steel 4-piece suspension kit designed to restore steering geometry and durable suspension performance on compatible Chevy, GMC and Cadillac trucks and SUVs.

This complete front suspension kit combines two forged-steel upper control arms and two matched lower ball joints to replace worn factory components on Chevrolet Silverado, GMC Sierra and related full-size trucks and SUVs from the 2007–2016 model years. Built for repeatable fitment and long service life, the kit is engineered for direct-replacement installation where the factory design uses forged steel components (not compatible with aluminum or stamped-steel control arms).

Which vehicles will this ILONPA kit fit?

The kit fits many GM full-size trucks and SUVs when the original upper arms are forged steel. Compatible models include Silverado and Sierra 1500, Tahoe, Suburban 1500, Yukon and Escalade variants within the listed years. It will not fit vehicles with aluminum or stamped-steel upper control arms—check your vehicle's original component material before ordering.

• Chevrolet Silverado 1500: 2007–2016
• GMC Sierra 1500: 2007–2016
• Cadillac Escalade / Escalade ESV: 2007–2014
• GMC Yukon / Yukon XL 1500: 2007–2014
• Chevrolet Avalanche: 2007–2013; Tahoe: 2007–2015; Suburban 1500: 2007–2013

How are the parts constructed and how does that help durability?

ILONPA uses forged steel for the upper control arms and high-quality joints for the lowers, giving improved strength over weaker stamped components. Forging yields a denser grain structure that resists bending and fatigue under load, helping preserve alignment and handling over time.

• Forged-steel arms resist impact and torsion better than stamped options.
• Matched lower ball joints designed to work with the new uppers for consistent steering feel.
• Protective finishes to reduce corrosion and extend service life.

Is installation straightforward for a home mechanic?

Yes — the kit is manufactured to OEM-equivalent tolerances so it installs using standard suspension service procedures. Removing the old control arms and pressing in the lower ball joints may require common shop tools or a ball joint press; alignments should be performed after installation to ensure correct steering geometry.

• Direct-replacement fit where original parts are forged steel.
• Upper arms include steering alignment features to simplify setup.
• Wheel alignment recommended after installation for optimal tire wear and handling.

What should I verify before buying to ensure proper fit?

Confirm your vehicle’s model year and whether the factory upper control arms are forged steel—not aluminum or stamped steel—because this kit is only compatible with forged-steel configurations. Review the fitment list and compare part pictures with your vehicle’s existing components if uncertain.

• Check vehicle make, model, and year against the compatibility list.
• Inspect the factory upper control arm material before ordering.
• Contact ILONPA support if you need help verifying fitment.

Who is this for: This 4-piece ILONPA front suspension kit is intended for owners and technicians of Chevy, GMC and Cadillac full-size trucks and SUVs (2007–2016 model years) who need a durable, direct-replacement set of forged-steel upper control arms paired with new lower ball joints. Choose this kit if your vehicle originally used forged upper arms, you want stronger-than-factory longevity, and you or your shop can perform a standard suspension replacement and post-install alignment.