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.

This Part Fits:

Year	Make	Model	Submodel
2015-2019	Chevrolet	Silverado 2500 HD	High Country
2011-2019	Chevrolet	Silverado 2500 HD	LT
2011-2019	Chevrolet	Silverado 2500 HD	LTZ
2011-2019	Chevrolet	Silverado 2500 HD	WT
2015-2020	Chevrolet	Silverado 3500 HD	High Country
2011-2020	Chevrolet	Silverado 3500 HD	LT
2011-2020	Chevrolet	Silverado 3500 HD	LTZ
2011-2020	Chevrolet	Silverado 3500 HD	WT
2015-2019	GMC	Sierra 2500 HD	Base
2011-2019	GMC	Sierra 2500 HD	Denali
2011-2019	GMC	Sierra 2500 HD	SLE
2011-2019	GMC	Sierra 2500 HD	SLT
2011-2014	GMC	Sierra 2500 HD	WT
2020	GMC	Sierra 3500 HD	AT4
2015-2020	GMC	Sierra 3500 HD	Base
2011-2020	GMC	Sierra 3500 HD	Denali
2011-2020	GMC	Sierra 3500 HD	SLE
2011-2020	GMC	Sierra 3500 HD	SLT
2011-2014	GMC	Sierra 3500 HD	WT