All Weather Fluid: Contains special modifiers to reduce friction and ensure smooth rod reaction. Full Displaced Valving: Tuned specifically for each application, this valving automatically adjusts to road extremes to provide consistency and ride come comfort. Fluon Banded Piston: Works with the existing groove tube technology to provide responsiveness to changing road conditions. Unique Groove Tube - PSD: Precision tapered grooves help provide added control without sacrificing comfo