KYB Shocks & Struts Gas-A-Just Rear 11 Hyundai ElantraThe 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 control, and a second high pressure nitrogen gas area with a floating piston that provides a comfortable ride during normal driving and adds instant performance on demand. This Part Fits: Year Make Model