The new ReadyLIFT 69-3416 4" SST Lift Kit is packed with innovative features to enhance your 2014-2016 GM 1500 4WD truck's performance. Our engineers have meticulously designed this kit, taking into account the significant changes in the 4WD suspension of these trucks, including an electric steering rack, differential mounting system, aluminum control arm design, and spindle updates. The kit includes ultra-strong TCT free-floating pivot bushings that are self-lubricating, eliminating friction for smooth operation. One notable improvement is the differential drop mounting system, which utilizes machined billet circular spacers to provide just the right amount of differential drop without interfering with the rear-mounted electric steering rack. We've also added a skid plate for added protection. The kit features heavy-duty ball joints, specially developed for the cast steel suspension on these trucks, enhancing durability and strength. Additionally, the kit includes tubular steel Upper Control Arms with newly designed UCA inner bushings and washer backing spacer sleeves, extending the lifespan of the bushings. Our rigorous engineering testing has shown that the 69-3416 kit is incredibly versatile and robust, allowing you to install up to a 33x11.50 tire (max) on 5.25" backspacing wheels. Please note that aftermarket wheels are required for this kit. It's important to mention that this kit is designed for use on trucks with factory cast steel upper and lower Control Arms and is not suitable for trucks with aluminum or stamped steel upper Control Arms. Standard Z71 models are compatible. If your truck has aluminum upper and lower Control Arms, consider the 69-3414 kit. Please note that it's not suitable for AWD Denali Trucks and is not intended for off-roading purposes. However, it can be used on 2014-2018 GM 1500 2WD trucks with cast steel upper control arms, excluding the included diff drops and skid plate.