The KYB Gas-a-just monotube shock absorber has additional performance advantages over the traditional 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.

Fitment:
Checker Marathon Base 1974
Checker Marathon Base 1975
Checker Marathon Base 1976
Checker Marathon Base 1977
Checker Marathon Base 1978
Checker Marathon Base 1979
Checker Marathon Base 1980
Checker Marathon Base 1981
Checker Marathon Base 1982
Checker Marathon Deluxe 1974
Checker Marathon Deluxe 1975
Checker Marathon Deluxe 1976
Checker Marathon Deluxe 1977
Checker Marathon Deluxe 1978
Checker Marathon Deluxe 1979
Checker Marathon Deluxe 1980
Checker Marathon Deluxe 1981
Checker Marathon Deluxe 1982
Checker Marathon Town Custom 1974
Dodge B300 Base 1975
Dodge B300 Base 1976
Dodge B300 Base 1977
Dodge B300 Base 1978
Dodge B300 Base 1979
Dodge B300 Base 1980
Dodge B300 Van Base 1971
Dodge B300 Van Base 1972
Dodge B300 Van Base 1973
Dodge B300 Van Base 1974
Dodge B300 Van Maxi 1972
Dodge B300 Van Maxi 1973
Dodge B300 Van Maxi 1974
Dodge B300 Van Maxi Wagon 1972
Dodge B300 Van Maxi Wagon 1973
Dodge B300 Van Maxi Wagon 1974
Dodge B300 Van Sportsman 1971
Dodge B300 Van Sportsman 1972
Dodge B300 Van Sportsman 1973
Dodge B300 Van Sportsman 1974
Dodge B350 Base 1981
Dodge B350 Base 1982
Dodge B350 Base 1983
Dodge B350 Base 1984
Dodge B350 Base 1985
Dodge B350 Base 1986
Dodge B350 Base 1987
Dodge B350 Base 1988
Dodge B350 Base 1989
Dodge B350 Base 1990
Dodge B350 Base 1991
Dodge B350 Base 1992
Dodge B350 Base 1993
Dodge B350 Base 1994
Dodge D200 Base 1977
Dodge D200 Base 1978
Dodge D200 Base 1979
Dodge D200 Base 1980
Dodge D200 Custom 1975
Dodge D200 Custom 1976
Dodge D200 Pickup Base 1972
Dodge D200 Pickup Base 1973
Dodge D200 Pickup Base 1974
Dodge D250 Base 1981
Dodge D250 Base 1982
Dodge D250 Base 1983
Dodge D250 Base 1984
Dodge D250 Base 1985
Dodge D250 Base 1986
Dodge D250 Base 1987
Dodge D250 Base 1988
Dodge D250 Base 1989
Dodge D250 Base 1990
Dodge D250 Base 1991
Dodge D250 Base 1992
Dodge D250 Base 1993
Dodge D300 Base 1977
Dodge D300 Base 1978
Dodge D300 Base 1979
Dodge D300 Base 1980
Dodge D300 Custom 1975
Dodge D300 Custom 1976
Dodge D300 Pickup Base 1972
Dodge D300 Pickup Base 1973
Dodge D300 Pickup Base 1974
Dodge D350 Base 1981
Dodge D350 Base 1982
Dodge D350 Base 1983
Dodge D350 Base 1984
Dodge D350 Base 1985
Dodge D350 Base 1986
Dodge D350 Base 1987
Dodge D350 Base 1988
Dodge D350 Base 1989
Dodge D350 Base 1990
Dodge D350 Base 1991
Dodge D350 Base 1992
Dodge D350 Base 1993
Plymouth PB300 Van Base 1974
Plymouth PB300 Van Voyager 1974
Plymouth PB300 Van Voyager EX 1974
Plymouth PB300 Van Voyager EX Wagon 1974
Plymouth PB300 Voyager 1975
Plymouth PB300 Voyager 1976
Plymouth PB300 Voyager 1977
Plymouth PB300 Voyager 1978
Plymouth PB300 Voyager 1979
Plymouth PB300 Voyager 1980
Plymouth PB350 Voyager 1981
Plymouth PB350 Voyager 1982
Plymouth PB350 Voyager 1983