SPC Performance GM Truck/SUV Front Control Arms (PR)

SPC Performance is known for making suspension parts that help you dial in your alignment, especially after you've changed your vehicle's ride height. These front upper control arms are designed for a wide range of GM trucks and SUVs, including models like the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade. If you've lifted your truck by about 3 inches or lowered it by about 1 inch, you've likely noticed that your factory alignment adjusters just don't offer enough range to get your caster back where it needs to be. These SPC arms provide a fixed +2 degree caster change, giving you the extra adjustment range needed to restore proper drivability and tire wear characteristics.

These control arms are built with fully forged construction for maximum strength, ensuring they can handle the demands of altered suspension geometry. They come equipped with booted and greasable ball joints that are designed for longevity. A key feature is SPC's xAxis technology, which uses sealed flex joints. These joints allow for free pivot movement during droop and misalignment without binding the joint, which can happen with standard alignment adjustments. The xAxis ball joints also incorporate rubber isolation to help maintain the original Noise, Vibration, and Harshness (NVH) levels, so you don't sacrifice ride comfort for improved alignment capabilities. The kit includes both the right and left hand side control arms. If you've lowered your vehicle more than 1 inch, you might find it gains caster quickly. In those situations, you can swap these arms from left to right to achieve a -2 degree caster change if needed.

For those looking to fine-tune their alignment even further, SPC offers replacement cams (p/n 86375), alignment pins (p/n 86325), and locking plates (p/n 86320) separately. These control arms are a solid option for restoring proper alignment after suspension modifications.