Monroe S4402 Sensa-Trac Shock Absorber

The Monroe S4402 Sensa-Trac shock absorber features advanced Position Sensitive Damping (PSD) technology that automatically adjusts to changing road and weight conditions for superior ride quality and control. This twin-tube shock absorber utilizes Monroe's exclusive Safe-Tech system with precision-tapered grooves in the pressure tube that work in conjunction with application-engineered valving to provide optimal performance.

Key Features:

• Position Sensitive Damping (PSD) technology adjusts more rapidly than standard shock absorbers
• Fluon-banded piston provides consistent sealing between piston and pressure tube for improved control and durability
• All-weather hydraulic fluid with special friction modifiers ensures smooth rod reaction in all temperatures
• Precision-tapered grooves in pressure tube perform like an additional stage of valving for optimum ride tuning
• Rod-displaced valving tuned specifically for each application
• Nitrogen gas-charged design reduces aeration and maintains optimal tire-to-road contact
• Heavy-duty nitrocarburized piston rod for extended service life

The Sensa-Trac design delivers two shocks in one—providing comfortable cruising during normal driving while automatically transitioning to firmer control during demanding driving situations. The precision grooves allow fluid bypass during the comfort zone, then direct full flow through the piston valving when additional control is needed, resulting in enhanced handling without sacrificing ride comfort.