2007L-2018 Silverado 1500-Sierra 1500 KYB Gas-A-Just Shock Absorber, Rear

• KYB recommended OEM replacement shock 
• Specifically calibrated to help restore the original handling and control characteristics of Full-Size GM trucks
• Uses a seamless working cylinder matched with a Teflon coated piston band for a positive seal and longer life
• Air-free hydraulic piston and valve
• Nitrogen charged 
• Mono-tube
• Extended Length 24.38  inches
• Compressed Length 15.86 inches
• Sold each-two required
• NOTE: Not for trucks with electronic ride control

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 for vehicles that came equipped with a monotube shock, and as a performance upgrade on vehicles that came equipped from the factory with twin-tube shocks. 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.
The high pressure monotube design responds instantly to conditions and driver inputs to deliver increased handling capabilities over twin-tube designs. Monotube shocks have separate chambers for the nitrogen gas and hydraulic fluid, this eliminates aeration and foaming and helps maintain consistent damping force in all conditions.

Chevrolet and GMC truck KYB shocks restore performance and handling