Specifically engineered to provide better handling, control and performance for light trucks and SUVs, Monroe Reflex monotube shocks feature a high-pressure gas to provide additional spring rate, helping to maximize damping efficiency and control. Product Features:MAINTAINS VEHICLE CONTROL -- Monotube technology maintains vehicle control over bumps, dips and potholes for vehicles originally equipped with monotube shocks and strutsIMPROVED IMPACT ABSORPTION -- Hydraulic lock-out isolates suspension impact and helps maintain vehicle integrity (where applicable)CONSISTENT RIDE -- High temperature OE all-weather fluid contains special additives to assist with extreme temperatures and help reduce oil breakdownEXCELLENT RESPONSE AND STABILITY -- High-pressure nitrogen charge provides a quicker response for excellent vehicle controlBUILT TO LAST -- High-strength shock housing and hardened, chrome-plated piston rod provide durability and longer service lifeCONTROL AND DURABILITY -- Fluon-banded piston provides consistent sealing between piston and pressure tube for better control and increased durabilityREDUCED SHOCK FADE AND AERATION -- Free floating dividing piston separates shock fluid from high-pressure gas charged to reduce shock fade and aeration