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KYB Suspension 555601 Gas-a-Just Monotube Gas Shock Absorber

(2003-2011 Ford Crown Victoria; 2003-2011 Lincoln Town Car; 2003-2011 Mercury Grand Marquis)

Part of: KYB Suspension Gas-a-Just Monotube Gas Shock Absorber

Other options in this family: KYB Suspension KG54328 KYB Suspension KG5498 KYB Suspension KG9025 KYB Suspension KG54314 KYB Suspension 554384

Manufacturer

Picture for manufacturer KYB Suspension

Part Number

555601
15 reviews
Sale Price

$94.06

1 left at this price

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Usually delivered within 2 days

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Product Details

The KYB Gas-a-Just 555601 is a high-performance monotube gas shock absorber designed to restore and enhance your vehicle's ride quality and handling characteristics. This premium replacement shock features KYB's proven monotube design that delivers superior responsiveness and fade-free performance under demanding driving conditions.

Key Features:

  • Monotube design with two separate working chambers for optimal performance
  • Air-free hydraulic piston and valve chamber provides precise damping control and instant responsiveness
  • High-pressure nitrogen gas chamber with floating piston separates gas and oil for consistent performance
  • Larger piston diameter compared to twin-tube designs for improved heat dissipation and fade resistance
  • Provides firm, controlled ride quality with enhanced stability during cornering and aggressive driving
  • Maintains comfortable ride during normal driving while delivering performance on demand
  • Direct OE monotube replacement for vehicles originally equipped with monotube shocks

The Gas-a-Just monotube configuration ensures the hydraulic fluid and nitrogen gas never mix, preventing aeration and maintaining consistent damping performance. The high-pressure gas charge provides additional spring rate to help control body roll and improve vehicle stability. Ideal for drivers seeking improved handling and performance without sacrificing ride quality.

Products specifications

Fits

2003-2011 Ford Crown Victoria; 2003-2011 Lincoln Town Car; 2003-2011 Mercury Grand Marquis

Compressed Length

12.92

Extended Length

20.09

Stroke Length

7.17

Lower Mount Type

E2(12.2X67.5)

Feature and Benefit 7

ELECTRONIC SAFETY SYSTEMS DEPEND ON THE SUSPENSION, BRAKES AND TIRES OPERATING AS THE VEHICLE MANUFACTURER INTENDED. THE KYB GAS-A-JUST HELPS KEEP ELECTRONIC SAFETY SYSTEMS PERFORMING AS DESIGNED.

Feature and Benefit 5

FLUID LEAKING CAN BE A CAUSE OF SHOCK FAILURE, THE KYB GAS-A-JUST HAS AN ULTRA-SMOOTH TRIPLE CHROME PLATED CHROME PISTON ROD TO REDUCE SEAL WEAR

Feature and Benefit 3

GAS-A-JUST MONOTUBES ARE DESIGNED FOR VEHICLES THAT WORK, TOW, AND HAVE LARGER, HEAVIER TIRES & WHEELS

Feature and Benefit 4

HIGH PRESSURE MONOTUBE DESIGN SEPARATES THE GAS AND OIL FOR FADE FREE OPERATION AND INSTANT RESPONSE

B-stop

N

Upper Mount Type

S1

FEATURE AND BENEFIT 1

THE CORRECT, MONOTUBE-DESIGNED OEM REPLACEMENT

Feature and Benefit 6

THE HIGHER GAS PRESSURE OF THE KYB GAS-A-JUST RESPONDS QUICKLY TO IMPROVE STEERING RESPONSE

Feature and Benefit 2

THE KYB GAS-A-JUST HELPS RESTORE THE DESIGNED CONTROL AND HANDLING OF THE CROWN VICTORIA AND GRAND MARQUIS

Feature and Benefit 8

TO REDUCE THE CHANCE OF NOISE AND VIBRATION KYB RECOMMENDS INSTALLING NEW STRUT MOUNTS, PART NUMBER: SM5267

Dust Cover Included

Y

R-stop

Y

Internal Rebound Spring

N

I own a 25' travel trailer without side trining signals. This light was exactly what I needed for additional safety feature of notifying vehicles of my intended movement.

Awesome love the site

Recieved what was ordered. I looked for this specific part for a few years and finally found for an exceptional price here.

My second order for the same rack for our new fleet pickup truck. I did not know what to expect with the first delivery. I was very satisfied and impressed with the quality for the price paid. The price on my second order within a month or two did increase approximately $12. I still feel this price is within reason. Of course we all like to pay less! The shipping time is adequate for the free delivery. I do recommend this rack. If the others in this line are as well build you will not go wrong with this brand. Thanks from the Glynn County Airport Commission Fleet Department.

Best price around for this product.

Good product, received in time.

very good

Good

Great

Great prices! Had exactly what I was looking for, for $20 less than anywhere else even with the shipping cost added in.

Great products, and pricing

Awesome pricing. Needed Pertonix setup for my wifes 62 Mercury Monterey Convertible S-55.

Great variety of products offered. Quick shipping.

Good selection at good prices

Great service and packaged really nicely!

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