KYB Gas-a-Just Monotube Rear Shock Absorber KYB554373 for Ford F-150

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.

• 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.

The KYB Gas-a-Just monotube rear shock absorber is engineered to provide responsive handling, consistent control, and dependable ride performance for select Ford F-150 applications. Part number KYB554373 uses a high-pressure nitrogen design to respond automatically to changing road and driving conditions, helping the suspension maintain control during everyday driving and more demanding maneuvers.

Unlike traditional twin-tube shocks, the KYB Gas-a-Just features two separate working chambers. An air-free hydraulic piston and valve area supports precise damping response, while a high-pressure nitrogen chamber with a floating piston helps reduce aeration and shock fade. This design delivers a comfortable ride under normal conditions and adds damping performance when additional control is needed. The shock absorber also helps the vehicle’s suspension operate as intended, supporting the performance of electronic safety systems that rely on proper suspension, braking, and tire operation.

Product specifications and technical data:

• Brand: KYB
• Part Number: KYB554373
• Product Type: Monotube gas-charged shock absorber
• Application Position: Rear
• Vehicle Type: Automotive pickup truck
• Gas Technology: High-pressure nitrogen with floating piston
• Design Benefit: Helps resist performance loss caused by aeration
• Safety Support: Helps maintain suspension performance for electronic safety systems

What's included: One KYB Gas-a-Just monotube rear shock absorber. Installation hardware and additional components are not specified and should be confirmed before installation.

Fitment: Designed for select 2009–2011 Ford F-150 4WD models, excluding SVT Raptor applications, and select 2013 Ford F-150 applications. Verify the vehicle’s year, drivetrain, trim, and suspension configuration before ordering, as fitment may vary between applications.

Features:

• Monotube Construction: Provides responsive damping and consistent control compared with conventional twin-tube designs.
• High-Pressure Nitrogen Chamber: Uses a floating piston to help maintain performance and reduce aeration-related fade.
• Automatic Performance Adjustment: Responds to changing road and driving conditions for improved suspension control.
• Electronic Safety System Support: Helps the suspension perform as intended for vehicles equipped with electronic safety systems.

Fitments:
2009 Ford F-150 FX4
2009 Ford F-150 King Ranch
2009 Ford F-150 Lariat
2009 Ford F-150 Platinum
2009 Ford F-150 STX
2009 Ford F-150 XL
2009 Ford F-150 XLT
2010 Ford F-150 FX4
2010 Ford F-150 Harley-Davidson Edition
2010 Ford F-150 King Ranch
2010 Ford F-150 Lariat
2010 Ford F-150 Platinum
2010 Ford F-150 STX
2010 Ford F-150 XL
2010 Ford F-150 XLT
2011 Ford F-150 FX4
2011 Ford F-150 Harley-Davidson Edition
2011 Ford F-150 King Ranch
2011 Ford F-150 Lariat
2011 Ford F-150 Lariat Limited
2011 Ford F-150 Platinum
2011 Ford F-150 STX
2011 Ford F-150 XL
2011 Ford F-150 XLT
2012 Ford F-150 FX4
2012 Ford F-150 Harley-Davidson Edition
2012 Ford F-150 King Ranch
2012 Ford F-150 Lariat
2012 Ford F-150 Platinum
2012 Ford F-150 STX
2012 Ford F-150 XL
2012 Ford F-150 XLT
2013 Ford F-150 FX4
2013 Ford F-150 King Ranch
2013 Ford F-150 Lariat
2013 Ford F-150 Limited
2013 Ford F-150 Platinum
2013 Ford F-150 STX
2013 Ford F-150 XL
2013 Ford F-150 XLT
2014 Ford F-150 FX4
2014 Ford F-150 King Ranch
2014 Ford F-150 Lariat
2014 Ford F-150 Limited
2014 Ford F-150 Platinum
2014 Ford F-150 STX
2014 Ford F-150 XL
2014 Ford F-150 XLT
2015 Ford F-150 King Ranch
2015 Ford F-150 Lariat
2015 Ford F-150 Platinum
2015 Ford F-150 XL
2015 Ford F-150 XLT
2016 Ford F-150 King Ranch
2016 Ford F-150 Lariat
2016 Ford F-150 Limited
2016 Ford F-150 Platinum
2016 Ford F-150 SSV
2016 Ford F-150 XL
2016 Ford F-150 XLT
2017 Ford F-150 King Ranch
2017 Ford F-150 Lariat
2017 Ford F-150 Limited
2017 Ford F-150 Platinum
2017 Ford F-150 Raptor
2017 Ford F-150 SSV
2017 Ford F-150 XL
2017 Ford F-150 XLT
2018 Ford F-150 King Ranch
2018 Ford F-150 Lariat
2018 Ford F-150 Limited
2018 Ford F-150 Platinum
2018 Ford F-150 Police Responder
2018 Ford F-150 Raptor
2018 Ford F-150 SSV
2018 Ford F-150 XL
2018 Ford F-150 XLT
2019 Ford F-150 King Ranch
2019 Ford F-150 Lariat
2019 Ford F-150 Limited
2019 Ford F-150 Platinum
2019 Ford F-150 Police Responder
2019 Ford F-150 SSV
2019 Ford F-150 XL
2019 Ford F-150 XLT
2020 Ford F-150 King Ranch
2020 Ford F-150 Lariat
2020 Ford F-150 Limited
2020 Ford F-150 Platinum
2020 Ford F-150 Police Responder
2020 Ford F-150 SSV
2020 Ford F-150 XL
2020 Ford F-150 XLT
2021 Ford F-150 King Ranch
2021 Ford F-150 Lariat
2021 Ford F-150 Limited
2021 Ford F-150 Platinum
2021 Ford F-150 Police Responder
2021 Ford F-150 SSV
2021 Ford F-150 XL
2021 Ford F-150 XLT
2022 Ford F-150 King Ranch
2022 Ford F-150 Lariat
2022 Ford F-150 Limited
2022 Ford F-150 Platinum
2022 Ford F-150 Police Responder
2022 Ford F-150 SSV
2022 Ford F-150 XL
2022 Ford F-150 XLT
2023 Ford F-150 King Ranch
2023 Ford F-150 Lariat
2023 Ford F-150 Limited
2023 Ford F-150 Platinum
2023 Ford F-150 Police Responder
2023 Ford F-150 SSV
2023 Ford F-150 XL
2023 Ford F-150 XLT
2024 Ford F-150 King Ranch
2024 Ford F-150 Lariat
2024 Ford F-150 Platinum
2024 Ford F-150 Police Responder
2024 Ford F-150 SSV
2024 Ford F-150 STX
2024 Ford F-150 XL
2024 Ford F-150 XLT
2025 Ford F-150 King Ranch
2025 Ford F-150 Lariat
2025 Ford F-150 Platinum
2025 Ford F-150 Police Responder
2025 Ford F-150 SSV
2025 Ford F-150 STX
2025 Ford F-150 XL
2025 Ford F-150 XLT

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Clearance Item: t
Units Per Sku: 1