SuperPro's master bushing kit for the 2007-2018 GMC Sierra and Chevrolet Silverado is a chassis and suspension overhaul in one box. Replacing 6 vital bushing locations across the front and rear suspension the KIT248K improves handling, accuracy, tire wear, durability and offers maintenance-free consistent performance over the life of the vehicle - backed by a lifetime warranty. All front suspension bushing upgrades include integrated steel press-fit shells offering a quick and precise OEM style fit. Rear spring and shackle bushings integrate grease retention features and carefully chosen durometers to not only delivery industry-leading service life and durability, but smooth silent operation. All of which contribute to like-new ride, handling and performance with no concession to comfort and cabin isolation. KIT248K includes: 2 x SPF5583K Front Upper Control Arm Inner Bushing Kit 1 x SPF5584K Front Lower Control Arm Inner Forward Bushing Kit 1 x SPF5585K Front Lower Control Arm Inner Rearward Bushing Kit 1 x SPF5586K Rear Leaf Spring Forward Eye Bushing Kit 1 x SPF5587K Rear Leaf Spring Rearward Eye Bushing Kit 1 SPF5588K Rear Leaf Spring Shackle Bushing Kit