KYB Suspension Shock Absorber P/N:KG5521

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$71.99
MPN: KG5521
UPC: 781552055211
Item Package Quantity: 1
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KYB Suspension Shock Absorber P/N:KG5521
KYB Suspension Shock Absorber P/N:KG5521
$71.99

Smooth out the ride and keep body motion in check with the KYB Gas-a-just Shock Absorber (KG5521), a high-pressure monotube gas shock for the rear position. This KYB shock absorber drops in as a direct-fit replacement for the listed applications, including the 1968-1969 Chevrolet Camaro, 1968-1974 AMC Javelin, 1992-2002 Ford Crown Victoria, 1990-2002 Lincoln Town Car and 1979-2002 Mercury Grand Marquis — see the Buyer's Guide tab for the full list of 28 vehicles.

Unlike a traditional twin-tube, the monotube design keeps two separate 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.

  • High-pressure monotube design: separates the gas and oil for fade-free operation and instant response, with no aeration fade.
  • Triple chrome-plated piston rod: an ultra-smooth rod that helps reduce seal wear, since fluid leaking can be a cause of shock failure.
  • Up to 25% more damping over original equipment shocks, with valving designed specifically for classic muscle cars.
  • Supports the vehicle's electronics: helps keep Electronic Safety Systems performing as the manufacturer designed.

Sold individually — replace the rear shocks as a matched pair for balanced ride control.

Interchange: 69606 · 5961

This part cross-references / interchanges with the following part numbers:

69606, 5961

Frequently Asked Questions

Is this KYB gas shock absorber a monotube or twin-tube design?

It's a high-pressure monotube (Gas-a-just) design. The monotube layout separates the nitrogen gas and oil in individual chambers for fade-free operation and instant response, unlike a traditional twin-tube shock.

Which position does the KYB KG5521 fit?

It's cataloged for the rear position on the listed applications. Confirm fitment for your specific vehicle in the Buyer's Guide tab before ordering.

Do I need to buy two of these shocks?

Each KG5521 is sold individually. For balanced ride control, it's best practice to replace both rear shocks as a matched pair rather than one at a time.

How much damping does the KYB Gas-a-just add?

KYB rates the Gas-a-just for up to 25% more damping performance over original equipment shocks, with valving designed specifically for classic muscle cars.

What does the triple chrome-plated piston rod do?

The ultra-smooth triple chrome-plated rod is designed to reduce seal wear. Since fluid leaking can be a cause of shock failure, this helps protect the internal seal over time.