The RockJock Johnny Joint® suspension system kit is a complete package that replaces all eight stock control arms and provides a 4" lift. It is engineered to provide unrivaled articulating flexibility and performance in the most adverse off-road conditions. The Johnny Joint® system keeps the tires in contact with the terrain for maximum traction. Kit includes 8 adjustable length Johnny Joint® control arms (single adjustable lower, double adjustable uppers), four 4" lift coil springs, Johnny Joint® adjustable front trac bar, rear trac bar relocation bracket, RockJock Antirock® front sway bar, rear sway bar extended links, and the RockJock front and rear polyurethane bump stop kits. When used in conjunction with a 1" body lift and a 1" motor mount lift, this kit allows for efficient use of up to 35" tires.