The Tuff Country 4" lift kit for the Jeep Wrangler TJ, Rubicon includes front and rear EZ-Ride coil springs, front & rear track bar bracket, rear sway bar end links, EZ-Flex lower control arms with polyurethane bushings, power steering pitman arm and a transfer case drop. Four SX6000 Hydro shocks are included. Shock boots sold separately. EZ-Flex control arms' unique design and function deliver the best highway driveability available in performance control arms. The specialized design minimizes stress on frame and axle mounts and results in greater axle movement. Bushing and sleeve design provides the best highway steering control and minimizes darting and road wander. Simple adjustments to EZ-Flex Arms will help eliminate most drive line vibration.