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KYB Suspension 551117 Gas-a-Just Monotube Performance Shock Absorber

(2006-2015 Mazda MX-5 Miata)

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

551117
14 reviews
Sale Price

$122.01

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The KYB Gas-a-Just 551117 is a high-performance monotube shock absorber designed to deliver superior handling and responsiveness compared to traditional twin-tube designs. This gas-charged shock provides instant performance adjustments and eliminates fade caused by aeration, making it ideal for drivers seeking enhanced vehicle control and stability.

Key Features:

  • Monotube design with dual working chambers for optimal performance
  • Air-free hydraulic piston and valve area ensures immediate responsiveness and precise control
  • High-pressure nitrogen gas chamber with floating piston technology
  • Automatically adjusts to driving conditions without manual intervention
  • Fade-free performance under demanding driving situations
  • Available as direct OE monotube replacement or performance upgrade for twin-tube applications
  • Maintains comfortable ride quality during normal driving while delivering instant performance on demand

The Gas-a-Just technology separates the hydraulic fluid from the pressurized nitrogen gas, preventing aeration and maintaining consistent damping characteristics. This design provides the responsive feel and control enthusiasts demand while retaining everyday drivability.

Products specifications

Fits

2006-2015 Mazda MX-5 Miata

Upper Mount Type

10X1.25

Compressed Length

14.96

Extended Length

20

Stroke Length

5.04

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

Lower Mount Type

SPECIAL

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 MX-5 MIATA

R-stop

Y

Internal Rebound Spring

N

Quick and easy, payed a few dollars more for a trusted seller. Still cheaper than amazon even though autoplicity sells it on Amazon too for $30 more.

This is honestly the lowest price I could find for a Fidanza flywheel for a 2ZZ-GE engine. We'll see how everything turns out after I receive and get it installed.

Great turnaround if parts are in stock.

Recieved the parts in a timely manner.

fast service

Half the price of local parts store

easy

Very easy

hey had what I needed at a low price and were easy to deal with.

Great service and fast shipping. They were the lowest and best price I could find on the internet. Thanks!

I ordered my Auto Vent Shade bug deflector 18174 on Thursday afternoon, June 14, 2012, and had it on my front porch by Tuesday, June 19, 2012. I thought that was fast shipping, especially considering there was a weekend involved. The price was also very reasonable. I am anxious to install my new bug deflector. I will be turning to Autoplicity in the future for my auto needs. Great Job Autoplicity!

Ordered Thursday, shipped Monday... guess all in all we can't be disappointed. At least they had them in stock.

I have used them a couple times. Always seem to be one of the lowest prices on the internet and pretty quick turnaround on shipping. If you live near Los Angeles, they have a warehouse in Cerritos, so things arrive real quick once they're shipped.

I ordered thermo tec express sleeve heat suppression for my honda s2000 through autoplicity.<br><br>I ordered it on 07/06/2012 and recieved a day later,very fast processing. Order came well packaged and competitive pricing.

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