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 KG4503 Gas-a-Just Monotube Performance Shock Absorber

(Chevrolet Corvette 1953-62; Ford Fairlane 1955-56, Custom 1952, Country Sedan 1952-56, Country Squire 1952-56, Sunliner 1952-56 + 8 more models)

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

Other options in this family: KYB Suspension 551108 KYB Suspension KG4605A KYB Suspension 551122 KYB Suspension KG4507 KYB Suspension 551119

Manufacturer

Picture for manufacturer KYB Suspension

Part Number

KG4503
13 reviews
Sale Price

$42.03

In Stock (10+)

delivery box

Usually delivered within 2 days

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 KG4503 is a high-pressure monotube shock absorber engineered to deliver superior performance and fade-free operation. This monotube design offers significant advantages over traditional twin-tube shocks, providing instant automatic adjustment to changing driving conditions without the performance degradation caused by aeration.

Key Features:

  • Monotube design eliminates fade and aeration issues common in twin-tube shocks
  • Dual-chamber construction with separate hydraulic and gas chambers
  • Air-free hydraulic piston and valve area ensures precise responsiveness and control
  • High-pressure nitrogen gas chamber with floating piston for adaptive performance
  • Delivers comfortable ride quality during normal driving conditions
  • Provides instant performance enhancement when driving demands increase
  • Available as direct OE monotube replacement or performance upgrade for OE twin-tube applications

The Gas-a-Just technology separates the hydraulic fluid from the nitrogen gas using a floating piston, maintaining consistent damping performance across all driving conditions. This design ensures optimal shock performance whether you're cruising on the highway or pushing through demanding corners.

Products specifications

Fits

Chevrolet Corvette 1953-62; Ford Fairlane 1955-56, Custom 1952, Country Sedan 1952-56, Country Squire 1952-56, Sunliner 1952-56, Victoria 1952-56, Crestline 1952-54, Customline 1952-56, Mainline 1952-56 + 4 more models

FEATURE AND BENEFIT 1

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

Extended Length

14.53

Stroke Length

5

Compressed Length

9.53

Feature and Benefit 2

COMPONENTS AND VALVING DESIGNED SPECIFICALLY FOR CLASSIC MUSCLE CARS

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

B-stop

N

Lower Mount Type

S1

Upper Mount Type

S1

Feature and Benefit 6

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

Dust Cover Included

Y

R-stop

Y

Internal Rebound Spring

N

Definitely will shop here again

So far, so good. Time will tell...

Fast and courteous.

A great place for auto parts will shop there agian

Thank You

Excellent price and fast shipping. Product showed up as described and timely.

Thanks Autoplicity you had the best prices I could find, fast shipping, and everything I ordered was exactly what I was looking for! Great Customer Service!

Ordering was a snap, everyone else had it on back order, please let me know if it is on back order.

Great price. Very happy with order. Will buy from them again.

absolutely lowest price on my Griffin radiator and super fast with the shipping to boot, what more could you ask for!

Quickly received item. Exactly what I ordered and was best price out there. Will do business with them again.

Great pricing and delivered in 3 days.

Good price and fast service. I'd do it again. Thanks

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