The ReadyLIFT A-Arm Kit has been developed for the consumer with a lifted truck who wants an extra edge and strength. The ReadyLIFT heavy-duty tubular steel upper Control Arms (UCAs) are stronger than the stock arms and are 100% bolt-on. The UCAs are a direct fit and are designed for 2011-19 Chevy Silverado 2500HD 3500HD trucks with 7-8" Lift Kits. Sold as Pairs - these new Upper Control Arms are the same Control Arms provided in our 7-8" lift kits and include our newest heavy-duty ball joints. These arms are designed and built with a modified cup angle which correctly positions the ball joint for lifted applications. This ensures the ability to achieve a perfect alignment every time!