The Treacle JLU 4-Door: 3.5” Coil Spring Base Lift Kit includes just the basic lift components only and doesn't have the drivability of a full suspension system. Requires front control arm Sport Brackets, or longer front lower control arms, or adjustable control arms, and/or an adjustable front track bar to correct suspension geometry. Does NOT include shocks. We recommend Falcon Performance Shocks or Treacle 9550 VSS shocks. These are the only shock absorbers engineered to work with Treacle lift coil springs to improve both compression and rebound for optimal vehicle stability. Coil Spring Base Lift Kits are offered with Treacle 9550 VSS Twin-Tube Shocks or without shock absorbers. Falcon Performance Shocks are available separately.