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KYB Suspension KG4509 Gas-a-Just Monotube Performance Shock Absorber

(1962-1976 Dodge Dart; 1964-1969 Plymouth Barracuda; 1970-1976 Plymouth Duster; 1960-1976 Plymouth Valiant; 1971-1976 Plymouth Scamp)

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

KG4509
12 reviews
Sale Price

$36.36

In Stock (6)

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Usually delivered within 2 days

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Product Details

The KYB Gas-a-Just KG4509 is a high-pressure monotube shock absorber engineered to deliver superior performance and fade-free operation. Designed as both an OE monotube replacement and a performance upgrade for traditional twin-tube systems, this shock provides instant responsiveness that automatically adapts to changing driving conditions.

Advanced Monotube Design Benefits:

  • Dual-chamber construction with separate hydraulic and nitrogen gas areas
  • Air-free hydraulic piston and valve chamber ensures precise control and immediate response
  • High-pressure nitrogen gas chamber with floating piston design
  • Eliminates shock fade caused by aeration during demanding driving
  • Delivers comfortable ride quality during normal driving with instant performance on demand
  • Superior heat dissipation compared to twin-tube designs

The Gas-a-Just monotube technology provides consistent damping performance by keeping hydraulic fluid and nitrogen gas completely separated. This design ensures the shock maintains optimal performance characteristics across all driving conditions, from daily commuting to spirited driving, without the performance degradation common in conventional shock absorbers.

Products specifications

Fits

1962-1976 Dodge Dart; 1964-1969 Plymouth Barracuda; 1970-1976 Plymouth Duster; 1960-1976 Plymouth Valiant; 1971-1976 Plymouth Scamp

FEATURE AND BENEFIT 1

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

Extended Length

14.72

Stroke Length

5.2

Compressed Length

9.53

Feature and Benefit 2

COMPONENTS AND VALVING DESIGNED SPECIFICALLY FOR CLASSIC MOPARS

Lower Mount Type

E2(11.1X32)

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

R-stop

N

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

Internal Rebound Spring

N

Easy site to navigate with hassel free ordering.

Website was easy to use, shipping was fast. Would order here again.

excellent

NICE JOB!

I am completely satisfied with this shopping experience

They were very fast on delivery. Price was great.

Send more sunex tool sales

Everything went smoothly, love the prices and the ease of transaction, hope to buy from you real soon, Nice people.

Thanks! glad you had the parts!

They did not have the part I ordered, but they quickly provided me with a nearly equivilent part! The shipping was fast and it was packed perfectly. I like them peoples!!!

Unbeatable price and super fast shipping! The website is easy to navigate and there is a wide range of products to choose from. No need to go to the auto parts store when you have Autoplicity.com

Ordered a VP Racing fuel container and fill tube late Friday and it's already on the way. <br>Best price online and very quick service. Great transaction will definitely order from vendor again. <br>Thanks Autoplicity.

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