The Gas-a-just monotube shock absorber is available as an OE monotube replacement to restore your vehicles original capabilities. The KYB Gas-a-just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness and con Product Features:The Correct, Monotube-Designed Orem ReplacementThe KYB Gas-A-Just Helps Restore The Designed Control And Handling Of The Lexus Is SedanGas-A-Just Monotubes Are Designed For Vehicles That Work, Tow, And Have Larger, Heavier Tires & WheelsHigh Pressure Monotube Design Separates The Gas And Oil For Fade Free Operation And Instant ResponseFluid 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 WearThe Higher Gas Pressure Of The KYB Gas-A-Just Responds Quickly To Improve Steering ResponseElectronic Safety Systems Depend On The Suspension, Brakes And Tires Operating As The Vehicle Manufacturer Intended. The KYB Gas-A-Just Helps Keep Electronic Safety Systems Performing As Designed.