KYB Suspension Shock Absorber P/N:KG5511

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$70.99
MPN: KG5511
UPC: 781552055112
Item Package Quantity: 1
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KYB Suspension Shock Absorber P/N:KG5511
KYB Suspension Shock Absorber P/N:KG5511
$70.99

Firm up body control and keep every bump settled with the KYB Gas-a-just KYB shock absorber KG5511, a high-pressure monotube gas shock that installs as a direct-fit rear replacement for classic Mopars: the 1957-1961 Plymouth Fury, 1960-1976 Plymouth Valiant, 1963-1976 Dodge Dart, 1964-1969 Plymouth Barracuda, 1970-1976 Plymouth Duster, and 1971-1976 Plymouth Scamp. Its components and valving are designed specifically for these vehicles.

  • High-pressure monotube design: keeps the gas and oil separated for fade-free operation and instant response, with two working chambers — an air-free hydraulic piston/valve area and a high-pressure nitrogen chamber with a floating piston.
  • Up to 25% more damping: the Gas-a-just adds up to 25% more damping performance over original-equipment shocks, with extra damping for vehicles that work, tow, and run larger, heavier tires and wheels.
  • Triple chrome-plated piston rod: an ultra-smooth rod helps reduce seal wear, since fluid leaking can be a cause of shock failure.
  • Steering response: the higher gas pressure helps improve steering response and helps keep electronic safety systems performing as the manufacturer intended.

Signs a rear shock may need replacing include excessive bounce, bottoming out, uneven tire wear, and a wandering ride. Replace both sides as a matched pair for balanced handling.

Interchange: 82131 · 31131

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

82131, 31131

Frequently Asked Questions

Is this a KYB gas shock absorber and where does it mount?

Yes — it is a KYB Gas-a-just high-pressure monotube gas shock. This listing is the rear-position shock for the listed classic Mopar applications.

Does the KG5511 fit my Dodge Dart?

It is cataloged as a rear shock for the 1963-1976 Dodge Dart, along with several Plymouth models. Confirm your vehicle in the Buyer's Guide tab before ordering.

How is the monotube design different from a twin-tube shock?

The high-pressure monotube keeps the gas and oil in separate chambers, so it resists fade from aeration and responds instantly for control during normal driving.

How many should I buy?

Shocks are sold individually. Replacing both rear shocks as a matched pair is recommended for even, balanced handling.

What are signs my rear shocks need replacing?

Common signs include excessive bounce, bottoming out over bumps, uneven tire wear, and a wandering feel. Diagnose the cause first, since other suspension parts can share these symptoms.