Keep the rear of your Jeep planted with the KYB Gas-a-just Suspension Shock Absorber 554377, a high-pressure monotube gas shock that drops in as a direct-fit rear replacement for the 2005-2010 Jeep Grand Cherokee. Its components and valving are designed specifically for Jeep Grand Cherokees, adding up to 25% more damping over original-equipment shocks for vehicles that work, tow, and run larger, heavier tires and wheels.
Unlike a traditional twin-tube design, the monotube layout separates the gas and oil for fade-free operation and instant response, with two working chambers: an air-free hydraulic piston and valve area for responsiveness and control, plus a high-pressure nitrogen gas area with a floating piston for a comfortable ride during normal driving and added performance on demand.
- Fade-free monotube: high gas pressure keeps the shock from aerating, and higher pressure helps improve steering response.
- Triple chrome-plated piston rod: an ultra-smooth surface designed to reduce seal wear, since fluid leaking can be a cause of shock failure.
- Electronic safety support: helps keep electronic safety systems performing as designed by supporting proper suspension operation.
Sold individually — replace both rear shocks together as a matched pair for balanced damping.
Interchange: 52089751AD · 52089751AE · 52089751AG · 52089751AI · 52089751AJ · 52089752AD · 5290641AA · 5290641AB · 5290641AC · G64012 · 911278
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the KYB 554377 fit?
It is a direct-fit rear shock absorber for the 2005-2010 Jeep Grand Cherokee. Check the Buyer's Guide tab to confirm the fit for your specific vehicle.
Is this a monotube or twin-tube shock?
It is a high-pressure monotube gas shock. The monotube design separates the gas and oil for fade-free operation and instant response, unlike a traditional twin-tube shock.
What position does this shock fit?
This is a rear shock absorber for the listed Jeep Grand Cherokee applications.
How much damping does it add over stock?
KYB states the Gas-a-just adds up to 25% more damping performance over original-equipment shocks, with valving designed specifically for Jeep Grand Cherokees.
Should I replace both shocks at once?
This listing is for one shock, sold individually. Replacing both rear shocks together as a matched pair is recommended for balanced, even damping.
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