HomeSuspension > Shocks and StrutsKYB KG5559 Suspension Shock Absorber - Rear
Part #: KG5559

KYB KG5559 Suspension Shock Absorber - Rear

Gas-a-just, Rear
47 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Gas-a-just, Rear
Fitment: Ford and Mercury, Capri, Cougar, Fairmont, LTD, Marquis, Mustang, and Zephyr
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Reliable Suspension Shock Absorber for Ford and Mercury Vehicles

The KYB Gas-a-just KG5559 suspension shock absorber is engineered to restore your vehicle's ride quality and handling. Designed specifically for select Ford and Mercury models, this shock absorber offers precise damping performance to improve driving stability and comfort.

  • Compressed length: 12.44 inches
  • Extended length: 20.31 inches
  • Stroke length: 7.87 inches
  • Lower mount type: E2 (12x53)
  • Upper mount type: S1
  • Includes dust cover for added protection
  • Internal rebound spring: No
  • B-stop and R-stop: Not included

About the KYB Gas-a-just Product Line

The Gas-a-just line from KYB is designed to provide consistent gas pressure for improved shock absorber response and control. This technology helps maintain vehicle stability and ride comfort by delivering reliable damping performance under various driving conditions. The KG5559 shock absorber benefits from this design, making it suitable for Ford and Mercury models requiring precise suspension tuning.

Detailed Product Description

The KG5559 shock absorber features a compressed length of 12.44 inches and an extended length of 20.31 inches, providing a stroke length of 7.87 inches. Its lower mount uses an E2 (12x53) configuration, while the upper mount is an S1 type, ensuring proper fitment and secure installation. The included dust cover helps protect the shock shaft from dirt and debris, extending the service life of the component. This shock absorber does not include an internal rebound spring or bump stops (B-stop and R-stop), focusing on straightforward, reliable damping performance.

Compatible Vehicles and Common Applications

  • Ford Capri
  • Ford Cougar
  • Ford Fairmont
  • Ford LTD
  • Ford Marquis
  • Ford Mustang
  • Mercury Zephyr

This shock absorber is compatible with these specific Ford and Mercury models, making it a suitable replacement part for restoring suspension performance.

Common Suspension Issues Addressed

  • Reduced ride comfort due to worn shocks
  • Excessive body roll during cornering
  • Increased stopping distance from poor damping
  • Uneven tire wear caused by suspension instability
  • Noise or vibration from damaged shock absorbers

Installation Notes and Tips

Ensure the vehicle is safely supported before removing the old shock absorber. Verify the mount types (E2 lower and S1 upper) match the vehicle’s suspension points. Inspect the dust cover and replace if damaged to maintain shock longevity. Proper torque specifications should be followed during installation to avoid premature wear or failure.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just KG5559 shock absorber to meet or exceed OEM standards. While specific warranty details are not provided here, KYB products typically come with a limited warranty covering defects in materials and workmanship. Refer to KYB’s official documentation for exact warranty terms.

BrandKYB
Part NumberKG5559
PositionGas-a-just, Rear
Compressed Length12.44
Extended Length20.31
Stroke Length7.87
Lower Mount TypeE2(12x53)
Upper Mount TypeS1
Dust Cover IncludedY
Internal Rebound SpringN
B-stopN
R-stopN

This part fits 47 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
1993FordMustangLX2.3LL4RearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1992FordMustangLX2.3LL4RearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1991FordMustangLX2.3LL4RearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1990FordMustangLX2.3LL4RearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1989FordMustangLX2.3LL4RearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1988FordMustangLX2.3LL4RearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1987FordMustangLX2.3LL4RearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1986FordLTDBaseRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1986FordLTDBroughamRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1986FordMustangLXRearMonotube Performance Upgrade; (Exc. Special Handling ); Gas-a-just
1986MercuryCapriRearMonotube Performance Upgrade; (Exc. Special Handling Package); Gas-a-just
1986MercuryMarquisRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1985FordLTDBaseRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1985FordLTDBroughamRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1985FordLTDLX BroughamRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1985FordMustangLXRearMonotube Performance Upgrade; (Exc. Special Handling ); Gas-a-just
1985MercuryCapriRearMonotube Performance Upgrade; (Exc. Special Handling Package); Gas-a-just
1985MercuryMarquisRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1984FordLTDBaseRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1984FordLTDBroughamRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1984FordMustangLRearMonotube Performance Upgrade; (Exc. Special Handling ); Gas-a-just
1984FordMustangLXRearMonotube Performance Upgrade; (Exc. Special Handling ); Gas-a-just
1984MercuryCapriRearMonotube Performance Upgrade; (Exc. Special Handling Package); Gas-a-just
1984MercuryMarquisRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1983FordFairmontRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1983FordLTDBaseRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1983FordLTDBroughamRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1983FordMustangGLRearMonotube Performance Upgrade; (Exc. Special Handling ); Gas-a-just
1983FordMustangGLXRearMonotube Performance Upgrade; (Exc. Special Handling ); Gas-a-just
1983FordMustangLRearMonotube Performance Upgrade; (Exc. Special Handling ); Gas-a-just
1983MercuryCapriRearMonotube Performance Upgrade; (Exc. Special Handling Package); Gas-a-just
1983MercuryMarquisRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1983MercuryZephyrRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982FordFairmontRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982FordMustangBaseRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982FordMustangGhiaRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982FordMustangGLRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982FordMustangGLXRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982FordMustangLRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982MercuryCapriRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982MercuryCougarBaseRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982MercuryCougarGSRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982MercuryCougarLSRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1982MercuryZephyrRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1981FordFairmontRearMonotube Performance Upgrade; w/ TRX Suspension; Gas-a-just
1981MercuryCougarBaseRearInstall a monotube shock absorber to enhance performance.; Gas-a-just
1981MercuryZephyrRearMonotube Performance Upgrade; w/ TRX Suspension; Gas-a-just

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

81460

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.