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KYB Suspension 551124 Gas-a-Just Monotube High Pressure Gas Strut

Manufacturer

KYB Suspension

<p>Since its founding in 1919, <strong>KYB Suspension</strong> has evolved from a small hydraulic research center in Japan into the world's largest manufacturer of automotive shock absorbers. With over a century of engineering expertise, KYB operates 32 facilities across 21 countries and produces more than one million shock absorbers every week. This global manufacturing footprint and commitment to innovation have made KYB the trusted choice for both original equipment manufacturers and aftermarket customers worldwide.</p> <h3>Original Equipment Heritage and Engineering Excellence</h3> <p>KYB's reputation is built on its extensive original equipment partnerships with major automakers including Chrysler, Ford, Infiniti, Lexus, Mazda, Mitsubishi, Nissan, Subaru, and Suzuki. This OE experience translates directly into aftermarket products that restore original handling characteristics and ride quality. Every KYB component is engineered using advanced hydraulic technology and manufactured on highly automated production lines capable of switching between different strut configurations in just 15 seconds, ensuring precision and consistency across their entire product range.</p> <h3>Complete Suspension Solutions</h3> <p>KYB offers comprehensive ride control solutions across multiple product categories. Their <a href="/820-kyb-suspension-suspension-strut-and-coil-spring-assembly-15174">Suspension Strut and Coil Spring Assemblies</a> provide complete, pre-assembled units that simplify installation while ensuring all components work together as an integrated system. For customers seeking individual components, KYB's <a href="/820-kyb-suspension-suspension-strut-assembly-7584">Suspension Strut Assemblies</a> deliver the same OE-quality engineering in a ready-to-install format. The brand's legendary <a href="/820-kyb-suspension-shock-absorber-7556">Shock Absorbers</a> showcase KYB's core hydraulic expertise, with advanced damping technologies proven in demanding applications from daily commuting to motorsports competition.</p> <h3>From Restoration to Performance</h3> <p>Whether the goal is restoring worn suspension components or upgrading performance capabilities, KYB provides solutions engineered for specific needs. Their <a href="/820-kyb-suspension-suspension-strut-assembly-kit-13801">Suspension Strut Assembly Kits</a> include all necessary mounting hardware and components for comprehensive corner replacement. For vehicles requiring individual <a href="/820-kyb-suspension-suspension-strut-19837">Suspension Struts</a>, KYB offers hundreds of application-specific designs calibrated to match original vehicle dynamics. Each product reflects the company's philosophy that suspension components must be precisely matched to vehicle weight, spring rates, and intended use.</p> <h3>Technology Proven Through Decades</h3> <p>KYB's dominance in the suspension market stems from continuous investment in research and development. The company pioneered numerous innovations in hydraulic damping technology, from monotube gas shock designs to advanced valving systems that automatically adjust to changing road conditions. This technical leadership, combined with strict quality control standards developed through OE manufacturing, ensures that every KYB product meets the demanding performance requirements of modern vehicles while providing the durability expected from the world's largest shock absorber manufacturer.</p>

Part Number

551124
08/16/2036 1:22 AM
Sale Price

$163.12

In Stock (5)

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Usually delivered within 2 days

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The KYB Gas-a-Just 551124 is a high-performance monotube gas strut designed to restore and enhance your vehicle's handling characteristics. This premium shock absorber utilizes advanced monotube technology to deliver superior performance over conventional twin-tube designs.

Key Features:

  • Monotube design with two separate working chambers for optimized performance
  • Air-free hydraulic piston and valve area provides immediate responsiveness and precise control
  • High-pressure nitrogen gas chamber with floating piston separates oil from gas to prevent aeration
  • Larger piston diameter than twin-tube shocks for improved fade resistance and heat dissipation
  • Consistent damping performance under demanding driving conditions
  • Comfortable ride quality during normal driving with instant performance on demand
  • Direct OE monotube replacement for easy installation

The Gas-a-Just monotube design keeps oil and gas separated by a floating piston, eliminating the performance-robbing aeration and fade that can occur in conventional shock absorbers. This results in more consistent damping, better handling response, and improved vehicle control in both daily driving and spirited performance situations.

Products specifications

Upper Mount Type

12X1.25

Compressed Length

19.19

Extended Length

27.04

Stroke Length

7.85

Lower Mount Type

E2(14.2/17.7X40)

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

Dust Cover Included

N

B-stop

N

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 LEXUS LS

R-stop

Y

Internal Rebound Spring

N

easy to use

EZ

Product as described and delivered on time

Quick and easy! Competitive prices

First experience. Very satisfied. Will buy from them again.

Very easy, to order from this company, will do agin thanks, docf⚡️⚡️

it was all good

Ita good

Springs came in on time, and seem to be great quality so far!

The website is easy on the eye and maneuverability is excellent.

It would be nice if standard shipping estimate included the date of arrival.

It fits. Looks exactly like the original. Will buy from this company again. Great Shipping time

Found Autoplicity through price searching. Best price, easy to navigate site, quick service. Bookedmarked for future use!

Simple and easy so far

Amazon payments made it fast and more trusted. Free shipping and tax made it affordable.

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