These Bilstein 51-322335 Upper Control Arms (UCAs) for the GMC Sierra 1500 are CAD designed with increased caster angles. These caster angles maintain correct alignment specifications with lifted front suspension. Bilstein Upper Control Arms maintain full range of motion, by utilizing a direct fit upper control arms it expands caster angles and improves ball joint pivot angles for more straight line stability. The control arms provide greater strength and toughness than standard OEM control arms.

Top Features and Benefits

• CAD designed w/increased caster angles to maintain correct alignment specifications with lifted front suspension
• Polyurethane or Delrin bushings reduce deflection and binding compared to OE rubber bushings for better handling
• Durable black powder coat finish and zinc plated hardware for corrosion resistance
• Improved ball joint cup angle allows additional 1" of travel over stock
• 4130 chromoly tubular steel construction is professionally MIG welded with formed steel bushing gussets for superior strength compared to stock arms
• Heavy duty OEM quality sealed ball joints provide smooth and quiet operation along with increased durability and minimal servicing compared to uni-balls
• Easy servicing without disassembly using provided grease fittings on bushings and ball joints
• Designed and tested to work with Bilstein Lift shocks and kits
• Made in the USA
• Owner rebuildable
• Limited Lifetime Warranty through Bilstein