{"product_id":"kyb-gas-a-just-monotube-rear-shock-absorber-kyb554373-for-ford-f-150","title":"KYB Gas-a-Just Monotube Rear Shock Absorber KYB554373 for Ford F-150","description":"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.\n\u003cul\u003e\n  \u003cli\u003eElectronic 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.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003eUnlike 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct specifications and technical data:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: KYB\u003c\/li\u003e\n\u003cli\u003ePart Number: KYB554373\u003c\/li\u003e\n\u003cli\u003eProduct Type: Monotube gas-charged shock absorber\u003c\/li\u003e\n\u003cli\u003eApplication Position: Rear\u003c\/li\u003e\n\u003cli\u003eVehicle Type: Automotive pickup truck\u003c\/li\u003e\n\u003cli\u003eGas Technology: High-pressure nitrogen with floating piston\u003c\/li\u003e\n\u003cli\u003eDesign Benefit: Helps resist performance loss caused by aeration\u003c\/li\u003e\n\u003cli\u003eSafety Support: Helps maintain suspension performance for electronic safety systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eWhat's included:\u003c\/strong\u003e One KYB Gas-a-Just monotube rear shock absorber. Installation hardware and additional components are not specified and should be confirmed before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 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.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMonotube Construction: Provides responsive damping and consistent control compared with conventional twin-tube designs.\u003c\/li\u003e\n\u003cli\u003eHigh-Pressure Nitrogen Chamber: Uses a floating piston to help maintain performance and reduce aeration-related fade.\u003c\/li\u003e\n\u003cli\u003eAutomatic Performance Adjustment: Responds to changing road and driving conditions for improved suspension control.\u003c\/li\u003e\n\u003cli\u003eElectronic Safety System Support: Helps the suspension perform as intended for vehicles equipped with electronic safety systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitments:\u003cbr\u003e\n2009 Ford F-150 FX4\u003cbr\u003e\n2009 Ford F-150 King Ranch\u003cbr\u003e\n2009 Ford F-150 Lariat\u003cbr\u003e\n2009 Ford F-150 Platinum\u003cbr\u003e\n2009 Ford F-150 STX\u003cbr\u003e\n2009 Ford F-150 XL\u003cbr\u003e\n2009 Ford F-150 XLT\u003cbr\u003e\n2010 Ford F-150 FX4\u003cbr\u003e\n2010 Ford F-150 Harley-Davidson Edition\u003cbr\u003e\n2010 Ford F-150 King Ranch\u003cbr\u003e\n2010 Ford F-150 Lariat\u003cbr\u003e\n2010 Ford F-150 Platinum\u003cbr\u003e\n2010 Ford F-150 STX\u003cbr\u003e\n2010 Ford F-150 XL\u003cbr\u003e\n2010 Ford F-150 XLT\u003cbr\u003e\n2011 Ford F-150 FX4\u003cbr\u003e\n2011 Ford F-150 Harley-Davidson Edition\u003cbr\u003e\n2011 Ford F-150 King Ranch\u003cbr\u003e\n2011 Ford F-150 Lariat\u003cbr\u003e\n2011 Ford F-150 Lariat Limited\u003cbr\u003e\n2011 Ford F-150 Platinum\u003cbr\u003e\n2011 Ford F-150 STX\u003cbr\u003e\n2011 Ford F-150 XL\u003cbr\u003e\n2011 Ford F-150 XLT\u003cbr\u003e\n2012 Ford F-150 FX4\u003cbr\u003e\n2012 Ford F-150 Harley-Davidson Edition\u003cbr\u003e\n2012 Ford F-150 King Ranch\u003cbr\u003e\n2012 Ford F-150 Lariat\u003cbr\u003e\n2012 Ford F-150 Platinum\u003cbr\u003e\n2012 Ford F-150 STX\u003cbr\u003e\n2012 Ford F-150 XL\u003cbr\u003e\n2012 Ford F-150 XLT\u003cbr\u003e\n2013 Ford F-150 FX4\u003cbr\u003e\n2013 Ford F-150 King Ranch\u003cbr\u003e\n2013 Ford F-150 Lariat\u003cbr\u003e\n2013 Ford F-150 Limited\u003cbr\u003e\n2013 Ford F-150 Platinum\u003cbr\u003e\n2013 Ford F-150 STX\u003cbr\u003e\n2013 Ford F-150 XL\u003cbr\u003e\n2013 Ford F-150 XLT\u003cbr\u003e\n2014 Ford F-150 FX4\u003cbr\u003e\n2014 Ford F-150 King Ranch\u003cbr\u003e\n2014 Ford F-150 Lariat\u003cbr\u003e\n2014 Ford F-150 Limited\u003cbr\u003e\n2014 Ford F-150 Platinum\u003cbr\u003e\n2014 Ford F-150 STX\u003cbr\u003e\n2014 Ford F-150 XL\u003cbr\u003e\n2014 Ford F-150 XLT\u003cbr\u003e\n2015 Ford F-150 King Ranch\u003cbr\u003e\n2015 Ford F-150 Lariat\u003cbr\u003e\n2015 Ford F-150 Platinum\u003cbr\u003e\n2015 Ford F-150 XL\u003cbr\u003e\n2015 Ford F-150 XLT\u003cbr\u003e\n2016 Ford F-150 King Ranch\u003cbr\u003e\n2016 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Responder\u003cbr\u003e\n2022 Ford F-150 SSV\u003cbr\u003e\n2022 Ford F-150 XL\u003cbr\u003e\n2022 Ford F-150 XLT\u003cbr\u003e\n2023 Ford F-150 King Ranch\u003cbr\u003e\n2023 Ford F-150 Lariat\u003cbr\u003e\n2023 Ford F-150 Limited\u003cbr\u003e\n2023 Ford F-150 Platinum\u003cbr\u003e\n2023 Ford F-150 Police Responder\u003cbr\u003e\n2023 Ford F-150 SSV\u003cbr\u003e\n2023 Ford F-150 XL\u003cbr\u003e\n2023 Ford F-150 XLT\u003cbr\u003e\n2024 Ford F-150 King Ranch\u003cbr\u003e\n2024 Ford F-150 Lariat\u003cbr\u003e\n2024 Ford F-150 Platinum\u003cbr\u003e\n2024 Ford F-150 Police Responder\u003cbr\u003e\n2024 Ford F-150 SSV\u003cbr\u003e\n2024 Ford F-150 STX\u003cbr\u003e\n2024 Ford F-150 XL\u003cbr\u003e\n2024 Ford F-150 XLT\u003cbr\u003e\n2025 Ford F-150 King Ranch\u003cbr\u003e\n2025 Ford F-150 Lariat\u003cbr\u003e\n2025 Ford F-150 Platinum\u003cbr\u003e\n2025 Ford F-150 Police Responder\u003cbr\u003e\n2025 Ford F-150 SSV\u003cbr\u003e\n2025 Ford F-150 STX\u003cbr\u003e\n2025 Ford F-150 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