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KYB Suspension KG4539 Gas-a-Just Monotube Gas Shock Absorber

(1988-1991 BMW M3; 1988-1991 BMW 325i; 1984-1985, 1991-1992 BMW 318i; 1988-1991 BMW 325is; 1984-1987 BMW 325e; 1991-1992 BMW 318is + 2 more models)

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

Other options in this family: KYB Suspension KG54328 KYB Suspension KG5498 KYB Suspension KG9025 KYB Suspension KG54314 KYB Suspension 554384

Manufacturer

Picture for manufacturer KYB Suspension

Part Number

KG4539
15 reviews
Sale Price

$37.70

1 left at this price

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Usually delivered within 2 days

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Product Details

The KYB Gas-a-Just KG4539 is a high-pressure monotube shock absorber designed to restore your vehicle's original handling capabilities and performance. This monotube design offers superior performance compared to traditional twin-tube shocks, providing improved fade resistance and more consistent damping control.

Key Features:

  • Monotube design with two separate working chambers for optimal performance
  • Air-free hydraulic piston and valve area delivers exceptional responsiveness and precise control
  • High-pressure nitrogen gas chamber with floating piston separator
  • Provides comfortable ride quality during normal driving conditions
  • Instant performance response on demand during aggressive driving or heavy loads
  • Superior heat dissipation compared to twin-tube designs
  • Fade-resistant performance for consistent damping
  • Direct OE monotube replacement for easy installation

The Gas-a-Just monotube shock is ideal for vehicles that need restored handling performance or for drivers who demand more control without sacrificing everyday ride comfort. The high-pressure gas charge and monotube construction make this shock an excellent choice for trucks, SUVs, and performance applications.

Products specifications

Fits

1988-1991 BMW M3; 1988-1991 BMW 325i; 1984-1985, 1991-1992 BMW 318i; 1988-1991 BMW 325is; 1984-1987 BMW 325e; 1991-1992 BMW 318is; 1988-1991 BMW 325iX; 1986-1988 BMW 325

FEATURE AND BENEFIT 1

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

Compressed Length

13.7

Extended Length

21.46

Stroke Length

7.76

Feature and Benefit 2

COMPONENTS AND VALVING DESIGNED SPECIFICALLY FOR THE BMW 3 SERIES

Lower Mount Type

E2(12X40)

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

Upper Mount Type

S1

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: SM5013

Dust Cover Included

Y

B-stop

Y

R-stop

Y

Internal Rebound Spring

N

Easy to navigate, and everything went smoothly. Thanks

All good !

quick +easy !

Just ordered so I’m not sure yet. Free shipping is why I left 4 stars. Once I receive my item I will update my review.

Order filled promptly and accurately. Would not hesitate to place future orders

Good website, fast delivery.

Awesome transaction and fair prices .

Easy Peasy

QUICK & EASY

Great product - prompt service - helpful customer relations - will use them again and recommend them to others

Good SO far!

Order was quickly processed, good price too.

Order an item a day ago and the next day its shipped! Had a question and customer service was there when you needed it!

Ordered Monday afternoon & it was here Wednesday! Can't get any better than that. Called prior to order & they were very helpful & without a long wait time either. I bookmarked them & will be sure to buy auto parts from them again. Thanks again.

Part was bitchin! Recomend!

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