Jeep Wrangler JK 4-Door 2-2.5 Inch Dual Rate Long Travel Lift Kit, One Box kit includes Front & Rear Black Max Shocks, Rear Track Bar relocation, Dual Rate Long Travel Coil Springs, Bumpstop relocation. No lower Arms, No Pitman Arm drop required. FMVSS126 Safety Compliant. Dual-rate Long Travel Coils maintain coil in bucket at full droop, Maximizes Articulation, Higher Strength Alloy over competitors prevents sagging, fractures and allows for powder coating in the OEM coils for superb ride quality, Individual Rear Spring rates Left & Right side same as OEM.