LCWRGS Front Upper Control Arms with Ball Joints — Fits Chevy Trailblazer/GMC Envoy 2002–2009, Reinforced Steel

LCWRGS Front Upper Control Arms with pre-installed ball joints are a complete front suspension replacement kit engineered to restore steering precision and ride stability on compatible GM SUVs.

This front upper control arm and ball joint set is built as a direct-fit repair for a range of GM models, including Chevy Trailblazer, GMC Envoy, Buick Rainier, Oldsmobile Bravada, Saab 9-7X, Isuzu Ascender and Chevy SSR model years listed. Each kit includes both left and right upper control arms plus two ball joints, with reinforced steel tubing, welded mounting plates and factory-style rubber bushings to reduce noise and vibration. The components are heat-treated and tested for fatigue resistance to match OE durability expectations.

Which vehicles will these control arms fit?

These upper control arms and the supplied ball joints are intended as replacements for specific GM mid-size SUVs and trucks from early 2000s model years. They follow OE mounting points and suspension geometry for a straightforward swap on supported vehicles.

• Chevy Trailblazer: 2002–2009
• Chevy SSR: 2003–2006
• GMC Envoy: 2002–2009
• Buick Rainier: 2004–2007; Oldsmobile Bravada: 2002–2004
• Saab 9-7X: 2005–2009; Isuzu Ascender: 2003–2007

What quality and construction features should I expect?

The kit is fabricated from high-strength steel tubing with solid plate mounting areas and is heat treated to improve resistance to fatigue and premature failure. Rubber bushings are preinstalled to damp road shocks and minimize cabin noise while maintaining correct steering feedback.

• High-strength steel body and welded mounting plates
• Heat-treated components for improved fatigue life
• Pre-installed rubber bushings to reduce vibration and noise
• Supplied ball joints matched to the control arms for correct fitment

How does replacing these parts affect handling and safety?

Worn upper control arms or ball joints can cause uneven tire wear, play in the steering, and a vague or noisy front end. Installing a matched set restores proper wheel location and suspension articulation, improving steering response and helping maintain even tire contact with the road.

• Reduces steering play and restores alignment geometry
• Helps prevent uneven tire wear and vibration
• Improves suspension control over bumps and during cornering
• Delivers a firmer, more predictable front-end feel

What comes in the package and what should I prepare for installation?

The kit ships with both driver and passenger upper control arms plus two front upper ball joints. Basic suspension tools and an alignment after installation are recommended. Depending on vehicle condition, you may need replacement hardware or related components such as tie rod ends or sway bar links.

• 1 x Front Upper Control Arm, Driver Side (K640294)
• 1 x Front Upper Control Arm, Passenger Side (K640293)
• 2 x Front Upper Ball Joints (K6664)
• Plan for a professional wheel alignment after installation

Who is this for: This LCWRGS front upper control arm and ball joint kit is aimed at DIY mechanics and professional technicians restoring front suspension performance on compatible early-2000s GM SUVs and trucks. Choose this kit if you need OE-style fitment, stronger-than-stock construction, and preinstalled bushings to cut installation time while recovering steering precision and reducing front-end noise.