The KYB Gas-a-Just Gas Strut (551131) offers enhanced performance advantages for the Lexus IS, delivering responsiveness and control without experiencing fade due to aeration. It is available as a replacement for original equipment (OE) monotube shocks or as an upgrade for OE twin-tube systems. The Gas-a-Just features two distinct working chambers: an air-free hydraulic piston and valve area for precise control, and a high-pressure nitrogen gas area with a floating piston that ensures a comfortable ride during normal driving and provides instant performance when needed.
This shock absorber is specifically designed with a monotube construction, which helps restore the original handling and control characteristics of the Lexus IS. Its high gas pressure design provides immediate and extra control for the vehicle.
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