Monroe OESpectrum® shocks feature a number of the latest technologies developed through many years of research and testing. These shocks are the perfect option if you’re looking for a perfect combination of comfort, control, and improved ride. The nitrogen charged assemblies utilize a unique damping control technology called the Twin Technology Active Control System that includes an Impact Control Valve which delivers outstanding control under virtually all driving conditions, and Low Speed Tunability Piston design used for noise, harshness, and vibration isolation. OE Spectrum™ shocks are also equipped with Full Displaced Valving which provides more consistency by automatically adjusting to road extremes. These shocks also include numerous durability enhancing features to ensure long service life, like a Fluon Banded Piston for consistent sealing between the piston and pressure tube, nitrocarburized piston rod, and self-lubricating piston seal designed to retain gas without excessive wear or friction.