All Weather Fluid: Contains special modifiers to reduce friction and ensure smooth rod reaction. Rod Displaced Valving: Tuned specifically for each application, this valving automatically adjusts to road extremes to provide consistency and ride comfort. Flu on Banded Piston: The flu on band provides consistent sealing between the piston and pressure tube which delivers better control and increased durability. Impact Control Valve delivers exceptional control under virtually all driving conditions and patented Low Speed Tune ability piston design that isolates impact-related noise, vibration and harshness Hardened and Chrome Plated Piston Rod: Long service life.