My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

KYB Suspension 551105 Gas-a-Just Monotube High Pressure Gas Shock Absorber

(2004-2009 Mazda 3; 2006-2010, 2012-2015 Mazda 5)

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

Other options in this family: KYB Suspension KG54317 KYB Suspension KG5462 KYB Suspension KG4752 KYB Suspension 554348 KYB Suspension KG5440

Manufacturer

Picture for manufacturer KYB Suspension

Part Number

551105
22 reviews
Sale Price

$73.66

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The KYB Gas-a-Just monotube shock absorber delivers superior performance through its advanced single-tube design that eliminates the fade and aeration issues common in twin-tube shocks. This high-pressure gas shock instantly adapts to changing driving conditions, providing both comfort and performance on demand.

Key Features:

  • Monotube design with two separate 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
  • Fade-free performance under all driving conditions
  • Automatic adjustment to performance needs without driver input
  • Comfortable ride during normal driving with instant performance enhancement when needed
  • Superior heat dissipation compared to twin-tube designs

The Gas-a-Just's innovative dual-chamber system separates the hydraulic fluid from the nitrogen gas charge, preventing aeration and maintaining consistent damping performance. The high-pressure gas chamber compresses during shock movement, providing progressive resistance that adapts to road conditions while maintaining tire contact for improved handling and stability.

Products specifications

Fits

2004-2009 Mazda 3; 2006-2010, 2012-2015 Mazda 5

FEATURE AND BENEFIT 1

ADDS UP TO 25% MORE DAMPING PERFORMANCE OVER ORIGINAL EQUIPMENT SHOCKS

Compressed Length

18.89

Extended Length

28.34

Stroke Length

9.45

Feature and Benefit 2

COMPONENTS AND VALVING DESIGNED SPECIFICALLY FOR MAZDAS

Lower Mount Type

E2(12X51)

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 INCLUDE ADDITIONAL DAMPING OVER OE DESIGN 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(8MM)

Feature and Benefit 6

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

Feature and Benefit 8

TO REDUCE THE CHANCE OF NOISE AND VIBRATION KYB RECOMMENDS INSTALLING NEW STRUT MOUNTS, PART NUMBER: SM5723

R-stop

Y

Internal Rebound Spring

N

Jennifer was very helpful with ALL questions and coupons. Thank you, Mike D.

Very easy selection and online ordering.

Fast and easy

Fast shipping and reasonable prices

ALL GOOD

Great service & fast delivery!

Fast and easy. Saved money on exact fit part.

Great selection, Great prices, fast and easy checkout.

Fast efficient service, great prices!

Good Job!

seamless...

Efficient checkout.

great price

Shopping has been great ordered something last week and it was prompt got it in 2 days and was priced really well compared to other places

Easy

Great and easy to order.

Good prices!!! Had problems with shipping order but was made very good on issue!! Now placing another order. Thanks guys

Fast and easy

fast and easy.

Good prices, good communication, and quick shipping. Would recommend for future purchases.

Very convenient!

quick and easy!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy