Brands Vehicles
Lowest Prices
Free Returns
Online Since 2009

KYB KG4521 Axle Shaft Damper

KYB KG4521 Axle Shaft Damper

KYB
Brand:KYB
Part Number: KG4521
UPC: 781552045212
Weight: 2.69 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Get the KYB KG4521 Axle Shaft Damper for your vehicle. Buy now and secure your purchase online!

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 KYB Gas-a-just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness and 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.

Features and Benefits:

  • Adds up to 25% more damping performance over original equipment shocks
  • Components and valving designed specifically for your vehicle
  • 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.
  • 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
  • Gas-a-Just monotubes include additional damping over OE design for vehicles that work, tow, and have larger, heavier tires & wheels
  • High pressure monotube design separates the gas and oil for fade free operation and instant response
  • The higher gas pressure of the KYB Gas-a-Just responds quickly to improve steering response

Specifications:

Compressed Length:
10.55
Dust Cover Included:
Y
Extended Length:
16.26
Includes Bump Stop:
N
Internal Rebound Spring:
N
Lower Mount Type:
E2(12x32)
Stroke Length:
5.71
Upper Mount Type:
E2(12x32)
Country of Origin:
MY

Select a vehicle to narrow KYB KG4521 Axle Shaft Damper fitment info!

Last Updated: 07/16/2024

Years Vehicle Per Vehicle Position Fit NotesFitment Notes
Ford Mustang

4.6L V8 Gas SOHC
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Mustang



4.6L V8 Gas SOHC Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Ford Mustang

3.8L V6 Gas OHV
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Mustang



3.8L V6 Gas OHV Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Ford Mustang

4.6L V8 Gas DOHC
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Mustang



4.6L V8 Gas DOHC Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Ford Mustang

5.4L V8 Gas DOHC
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Mustang



5.4L V8 Gas DOHC Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Ford Mustang

4.6L V8 Gas DOHC
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Mustang



4.6L V8 Gas DOHC Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Ford Mustang

5.8L V8 Gas OHV
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Mustang



5.8L V8 Gas OHV Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Ford Mustang

5.0L V8 Gas OHV
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Mustang



5.0L V8 Gas OHV Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Ford Mustang

2.3L L4 Gas SOHC
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Mustang



2.3L L4 Gas SOHC Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Ford Mustang

2.3L L4 Gas SOHC Turbo,
3.8L V6 Gas OHV
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Mustang



2.3L L4 Gas SOHC Turbo,
3.8L V6 Gas OHV Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Ford Thunderbird

2.3L L4 Gas SOHC Turbo,
3.8L V6 Gas OHV,
5.0L V8 Gas OHV
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Ford Thunderbird



2.3L L4 Gas SOHC Turbo,
3.8L V6 Gas OHV,
5.0L V8 Gas OHV Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Mercury Capri

2.3L L4 Gas SOHC,
3.8L V6 Gas OHV,
5.0L V8 Gas OHV
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Mercury Capri



2.3L L4 Gas SOHC,
3.8L V6 Gas OHV,
5.0L V8 Gas OHV Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Mercury Capri

2.3L L4 Gas SOHC Turbo
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Mercury Capri



2.3L L4 Gas SOHC Turbo Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Mercury Cougar

3.8L V6 Gas OHV,
5.0L V8 Gas OHV
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Mercury Cougar



3.8L V6 Gas OHV,
5.0L V8 Gas OHV Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Mercury Cougar

2.3L L4 Gas SOHC Turbo
2
 
 
Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
 

Mercury Cougar



2.3L L4 Gas SOHC Turbo Gas-a-just
Axle Damper (Rear Quad Shock)
Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).

2 Per Vehicle
Volkswagen Beetle

1.2L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Beetle



1.2L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Beetle

1.2L H4 Gas
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Beetle



1.2L H4 Gas

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Beetle

1.1L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Beetle



1.1L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Beetle

1.1L H4 Gas
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Beetle



1.1L H4 Gas

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Campmobile

1.8L H4 Gas,
1.8L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Campmobile



1.8L H4 Gas,
1.8L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Campmobile

1.7L H4 Gas
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Campmobile



1.7L H4 Gas

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Campmobile

1.6L H4 Gas
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Campmobile



1.6L H4 Gas

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Fastback

1.6L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Fastback



1.6L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Karmann Ghia

1.2L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Karmann Ghia



1.2L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Squareback

1.6L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Squareback



1.6L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Transporter

2.0L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Transporter



2.0L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Transporter

1.8L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Transporter



1.8L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Transporter

1.6L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Transporter



1.6L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Transporter

1.7L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Transporter



1.7L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Transporter

1.5L H4 Gas,
1.5L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Transporter



1.5L H4 Gas,
1.5L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle
Volkswagen Transporter

1.2L H4 Gas OHV
2
 
Front
 
Shock Absorber
Gas-a-just
Monotube Performance Upgrade
 

Volkswagen Transporter



1.2L H4 Gas OHV

Front Shock Absorber
Gas-a-just
Monotube Performance Upgrade

2 Per Vehicle


Customers who bought KYB KG4521 Axle Shaft Damper also purchased