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NAPA Auto Parts GRANDVIEW
844 Grandview Ave
Columbus,  OH  43215-1124
(614) 488-3176
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KYB Gas-a-just Strut

KYB Gas-a-just Strut

Part #: KYB 551121
Line: KYB
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Features & Benefits

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The Gas-a-just monotube shock absorber is available as an OE monotube replacement to restore your vehicle's original capabilities. 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.


  • The correct, monotube-designed OEM replacement
  • The KYB Gas-a-just helps restore the designed control and handling of full-size GM trucks
  • Gas-a-Just monotubes are designed 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
  • 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
  • The higher gas pressure of the KYB Gas-a-Just responds quickly to improve steering response
  • 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.
  • To reduce the chance of noise and vibration KYB recommends installing new strut mounts, part number: SM5530
  • Protect your new struts from dirt, debris and salt with a KYB Strut Boot, part number: SB129

Specifications

Boot Included No
Compressed Length 13.23 in
Lower Mount Type Cross Pin
Bearing Plate Included No
Manufacturer Part Number 551121
Spring Isolators Included No
Sub Brand Gas-a-just
VMRS Code 016020000
Internal Construction Type Monotube
Adjustable No
Quality Level Specialty
Weight 9.43 lbs
Upper Mount Type Stud
Brand KYB
Spring Included No
Internal Damper Type Gas
Extended Length 17.68 in
Shock Travel Length 4.45 in
SDS Required No

Safety Information

Vehicle Fitment Guide

Product Reviews