KYB Suspension Shock Absorber P/N:KG5558

Be the first to review this product
$70.99
MPN: KG5558
UPC: 781552000716
Item Package Quantity: 1
Adding to cart… The item has been added

Have questions?

KYB Suspension Shock Absorber P/N:KG5558
KYB Suspension Shock Absorber P/N:KG5558
$70.99

Smooth out your Saab's ride with the KYB Gas-a-just Shock Absorber (KG5558), a high-pressure monotube gas shock that drops in as a direct-fit rear replacement for the 1979-1993 SAAB 900 and 1979-1980 SAAB 99. This KYB shock absorber uses a high-pressure monotube design with components and valving KYB designed specifically for your Saab.

Unlike a traditional twin-tube, the Gas-a-just runs two separate working chambers: an air-free hydraulic piston and valve area for responsiveness and control, plus a second high-pressure nitrogen gas area with a floating piston that helps provide a comfortable ride during normal driving and adds damping on demand.

  • High-pressure monotube: separates gas and oil for fade-free operation and instant response, with no fade due to aeration.
  • Up to 25% more damping: adds damping over original-equipment shocks, with extra control for vehicles that work, tow, or run larger, heavier tires and wheels.
  • Triple chrome-plated piston rod: an ultra-smooth chrome piston rod is designed to reduce seal wear, since fluid leaking can be a cause of shock failure.
  • Quicker response: the higher gas pressure is designed to improve steering response and helps keep Electronic Safety Systems performing as intended.

Interchange: 69671 · 39011

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

69671, 39011

Frequently Asked Questions

What vehicles does the KYB KG5558 fit?

It is a rear shock absorber that fits the 1979-1993 SAAB 900 and 1979-1980 SAAB 99. See the Buyer's Guide tab to confirm the exact fit for your Saab.

What makes this KYB gas shock absorber different from a twin-tube?

The Gas-a-just monotube separates the gas and oil in two chambers, so it does not fade due to aeration and delivers instant response, unlike a traditional twin-tube design.

How much extra damping does it add?

KYB states the Gas-a-just adds up to 25% more damping over original-equipment shocks, with additional control for vehicles that work, tow, or run larger, heavier tires and wheels.

Why does it have a chrome-plated piston rod?

Fluid leaking can be a cause of shock failure, so the KYB Gas-a-just uses an ultra-smooth triple chrome-plated piston rod designed to reduce seal wear.

Should I replace shocks in pairs?

This listing is for one rear shock absorber. Replacing both sides on the same axle together as a matched pair is recommended for balanced, even ride control.