Tuff Country's 3.5" EZ-Flex lift kit includes front EZ-Ride coil springs, EZ-Flex lower control arms, track bar relocating bracket, transfer case drop kit, brake line relocating kit, with a 3" rear cast iron block kit. Four SX6000 Hydro shocks included. Shock boots sold separately. The EZ-Flex control arms' unique design and function deliver great performance. This 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 driveline vibration.