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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 Fluon Banded Piston - The fluon band provides consistent sealing between the piston and pressure tube which delivers better control and increased durability Unique Groove Tube (PSD) - Precision tapered grooves in the pressure tube perform like an additional stage of valving for optimum ride tuning Hardened & Chrome Plated Piston Rod - Long service life