The correct, monotube-designed OEM replacement strut The KYB Gas-a-just helps restore the designed control and handling of your Lexus High pressure monotube design separates the gas and oil for fade free operation and instant response Fluid leaking can be a cause of shock failure, the KYB Gas-a-just has an ultra-smooth triple chrome plated chrome piston rod to reduce seal wear The higher gas pressure of the KYB Gas-a-Just responds quickly to improve steering response