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KYB Suspension 553393 Gas-a-Just Monotube Performance Shock Absorber

(2012-2017 Smart Fortwo)

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

Other options in this family: KYB Suspension 551108 KYB Suspension KG4605A KYB Suspension 551119 KYB Suspension KG4503 KYB Suspension 551122

Manufacturer

Picture for manufacturer KYB Suspension

Part Number

553393
6 reviews
Sale Price

$87.77

In Stock (6)

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Usually delivered within 2 days

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Product Details

The KYB Gas-a-Just 553393 is a high-pressure monotube shock absorber engineered to deliver superior performance and fade-free operation. Unlike traditional twin-tube designs, this monotube shock provides instant automatic adjustment to changing road conditions while maintaining consistent damping performance.

Key Features:

  • Monotube design eliminates fade caused by aeration for consistent performance
  • Dual-chamber construction with separate hydraulic and nitrogen gas chambers
  • Air-free hydraulic piston and valve area ensures precise responsiveness and control
  • High-pressure nitrogen gas chamber with floating piston design
  • Automatic adjustment to performance demands without driver input
  • Offers performance upgrade over OE twin-tube shocks or direct monotube replacement

The Gas-a-Just design provides a comfortable ride during normal driving conditions while instantly delivering enhanced damping performance when needed during aggressive driving, cornering, or heavy loads. The floating piston separates the hydraulic fluid from the nitrogen gas charge, preventing mixing and maintaining optimal damping characteristics throughout the shock's service life.

Products specifications

Fits

2012-2017 Smart Fortwo

Compressed Length

12.04

Extended Length

16.22

Stroke Length

4.18

Lower Mount Type

E2(10X44.2)

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

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 SMART FORTWO

R-stop

Y

Internal Rebound Spring

N

It would be nice to be given option to B/O parts if need be with possible time frames of stock.

Straightforward communication & site use

Extremely simple ordering process with no petty passwords to remember

Thanks

Didn't know much about the part not even employees knew about it hoping it works right when i receive it

Good selection

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