Shopping Cart

Your cart is empty.

Your cart is empty.

KYB KG4509 Gas-a-Just Gas Shock

Free shipping on orders over $29.99

$33.03

$ 14 .99 $14.99

In Stock

About this item

  • Adds up to 25% more damping performance over original equipment shocks
  • Components and valving designed specifically for classic Mopars
  • High gas pressure design provides instant, extra control
  • monotube design outperforms all other standard shock absorbers
  • Unique, air-free, hydraulic unit eliminates performance fade


The KYB Gas-a-Just monotube shock absorber has additional performance advantages over the traditional twin-tube design: It can instantly, automatically adjust to your performance needs and never experiences fade due to aeration. The Gas-a-Just is available as an OE monotube replacement and as an OE twin-tube performance upgrade. The KYB Gas-a-Just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness & control, and a second high-pressure nitrogen gas area with a floating piston that provides a comfortable ride during normal driving and adds instant performance on demand.


Austin H.
2025-08-28 12:29:18
Fit and ride nice on my 74 dart
james e mcknight
2025-08-20 10:58:23
good
john
2025-08-02 20:21:29
Came quickly and work as they should
John Slezak
2025-07-26 18:05:14
I bought a set of 4 of these to replace a set of Gabriels I had on a vintage Plymouth Barracuda. While the Gabriels were only a few years old with maybe 3K miles on them, they were spent. I`ve noticed these shocks react much faster to bumps in the road and in hard turns they support better than the Gabriels. Overall I`m very satisfied. Oh I have to say, I got them from Just Suspension and they were fantastic people to work with.
Galen W
2025-07-07 17:24:58
Fit and performing good on my 71 Duster. Price is right.
George Chavez
2025-06-24 13:19:04
Shocks look good and feel great on my 63 Dodge Dart GT convertible! Very comfortable ride!
Michael E. Scoggins
2025-06-05 12:57:10
Well known shocks that will disappoint you. Installed on 71 Demon 340 and were perfect.
Thomas J. Rowlands Jr.
2025-04-20 15:32:09
GOOD SHOCKS, FAST DELIVERY,
Robert Grant Boles
2025-04-15 13:48:47
great product fits great my cars stance has improved
Guillermo Tovar
2025-03-21 16:23:21
Tebía problemas con la suspensión delantera de mi A-Body Mopar '72. El vehículo perdía altura, y tenía serios problemas en la dirección. Al usar estos amortiguadores, la respuesta fue inmediata. El vehículo se sentía más rígido y más estable, pero con la sensación de un vehículo más reciente. Si tienes un carro similar, los recomiendo al 100%
Stu
2025-03-05 14:04:30
I put these shocks on my 69 GTS. Made a huge difference in the ride. Reasonably priced and a great delivery. Very pleased and would order again.
Rubben P.
2025-03-02 17:24:25
Exelente! Mejoro notablemente el desempeño de la suspensión, los instale en un Dodge Valiant Duster 1973. Exelente producto.
LuLu
2025-02-19 10:22:02
Top notch product, easy install.
Recommended Products

$65.90

$ 25 .99 $25.99

4.9
Select Option

$169.95

$ 78 .99 $78.99

4.4
Select Option

$65.30

$ 31 .99 $31.99

4.8
Select Option

$44.93

$ 19 .99 $19.99

4.7
Select Option

$50.94

$ 25 .99 $25.99

4.4
Select Option

$9.99

$ 4 .99 $4.99

4.7
Select Option

$50.41

$ 21 .99 $21.99

4.4
Select Option

$121.44

$ 58 .99 $58.99

4.3
Select Option