Kit Summary: JKS1621, JKS1671, JKS9612, JSPEC1252, JSPEC1258, JSPEC1311Front/Rear HD Dual Rate Coil Springs designed for great ride quality across any terrain
HD springs offer additional load capacity for vehicles equipped with winch bumper, fullsize spare, roof rack, etc.
Front Adjustable Track Bar and Rear Track Bar Bracket to correct axle positioning under vehicle
Front Sway Bar Quicker Disconnects and Rear Sway Bar Links for increased offroad articulation
Front/Rear Bump Stop Extensions to properly limit suspension up travel
Front/Rear J-Link Lower Control Arms to add strength and correct caster