Help keep rear suspension movement controlled and steering responsive with this KYB shock absorber, part number KG54100, a high-pressure Gas-a-Just monotube gas shock. It fits many vehicles, among them the 1995-2000 Chevrolet Tahoe, 1995-1999 GMC Yukon and 1996-2007 Chevrolet Express 2500, and is cataloged for the rear position. See the "Vehicles it fits" section for the full list.
KYB's monotube construction offers added performance over a traditional twin-tube design by using two separate working chambers. The first is an air-free hydraulic piston and valve area for responsiveness and control. The second is a high-pressure nitrogen gas area with a floating piston, which supports a comfortable ride in normal driving and adds performance on demand.
- Fade-free design: the high-pressure monotube keeps the gas and oil separate. KYB designs this for fade-free operation and instant response.
- Quicker steering response: the higher gas pressure responds quickly to help improve steering response.
- Extra damping: KYB rates it at up to 25% more damping performance than original equipment shocks. The added damping over the OE design is intended for vehicles that work, tow, or run larger, heavier tires and wheels.
- Triple-chrome-plated piston rod: fluid leaks can cause a shock to fail, so the ultra-smooth rod is intended to reduce seal wear.
Electronic safety systems depend on the suspension, brakes and tires working as the vehicle maker intended. The Gas-a-Just is designed to help keep those systems performing as designed. This KYB gas shock absorber is a direct-fit replacement for the listed applications. Replacing shocks in pairs across the axle is recommended for balanced handling.
Interchange: 77638 · 911085
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Frequently Asked Questions
Which vehicles does the KYB KG54100 fit?
It fits many vehicles, including the 1995-2000 Chevrolet Tahoe, 1995-1999 GMC Yukon and 1996-2007 Chevrolet Express 2500. See the "Vehicles it fits" section for the full list.
Where does this KYB rear shock absorber install?
It is cataloged for the rear position on the listed applications. There it damps spring and axle movement to help keep the tires in contact with the road.
What makes the Gas-a-Just monotube design different?
A floating piston separates the oil from the high-pressure nitrogen gas, so the hydraulic side stays air-free. KYB designs this for fade-free operation and quick response.
What are signs a shock absorber may need replacing?
Common signs include fluid leaking from the body, excessive bouncing after bumps, body sway and uneven tire wear. Diagnose the cause first, because worn springs, bushings or tires can cause similar symptoms.
How much damping does it add over the original shocks?
KYB states the Gas-a-Just adds up to 25% more damping performance than original equipment shocks. It is intended for vehicles that work, tow, or run larger, heavier tires and wheels.
