Synergy Manufacturing 8063-10 Coil Spring Set Jeep JK 2-Door 2.0''/ 4-Door 1.0'' Jeep TJ/LJ 2.0'' Front Lift Springs Synergy Jeep JK, TJ/LJ, XJ Front Lift Coil Springs APPROXIMATE LIFT HEIGHT (2 DR JK): 2.0" APPROXIMATE LIFT HEIGHT (4 DR JK): 1.0" SPRING TYPE: MULTI-RATE FREE LENGTH (INCHES): 18.53 BLOCK HEIGHT (INCHES): 6.95