The KYB Gas-a-just monotube truck shock absorber has additional performance advantages over the twin-tube design: It can instantly, automatically adjust to your performance needs and never experiences fade due to aeration. The Gas-a-just is available as an OE monotube replacement and as an OE twin-tube performance upgrade. 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	Submodel
1975-1999	Chevrolet	P30	Base
1975-1985,1987-1990	Chevrolet	P30	Step-Van
1973-1974	Chevrolet	P30 Van	Base
1975-1978	GMC	P35	Base
1975-1978	GMC	P35	Value Van
1973-1974	GMC	P35/P3500 Van	Base
1974	GMC	P35/P3500 Van	Motor Home
1979-1999	GMC	P3500	Base
1979-1990	GMC	P3500	Value Van