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:
Ford Mustang Base 1971
Ford Mustang Base 1972
Ford Mustang Base 1973
Ford Mustang Boss 302 1971
Ford Mustang Boss 351 1971
Ford Mustang Boss 351 1972
Ford Mustang Grande 1971
Ford Mustang Grande 1972
Ford Mustang Grande 1973
Ford Mustang Mach 1 1971
Ford Mustang Mach 1 1972
Ford Mustang Mach 1 1973
Mercury Cougar Base 1971
Mercury Cougar Base 1972
Mercury Cougar Base 1973
Mercury Cougar XR-7 1971
Mercury Cougar XR-7 1972
Mercury Cougar XR-7 1973