FOX 985-24-155 Performance Series IFP Front Shock for 2017-2018 Ford F-250/F-350 Super Duty 4WD

FOX Performance Series shocks contain the latest in shock technology to transform the performance of your Truck or SUV. They use our race-proven damping control to provide a comfortable on-road ride and predictable off-road handling in even the toughest conditions. Application specific valving to maximize performance. Increase your vehicle's off-road capability by extending drop-out travel in most applications. Experience on-road comfort with performance-minded shock valving for a connected ride with less vehicle sway. Tuned specifically for your vehicle’s application._x000D_ _x000D_ Consistent and fade-resistant performance due to high-quality materials: aluminum bodies, race-developed main piston, and a true internal floating piston (IFP) to separate gas and oil._x000D_ _x000D_ Built-to-last, torture-tested and race-proven to give a lifetime of great rides. FOX products are built from aluminum, dissipating heat four times better than conventional materials. All FOX shocks are fully serviceable and resistant to corrosion and harsh environments.

• Performance Tuned For Vehicle Specific Application
• Redundant Sealing System/Long Lasting Performance
• IFP Separates Oil From High-Pressure Nitrogen Gas
• 100% Serviceable And Tunable For Longer Lifespan
• Aluminum Body Dissipates Heat Faster Than Steel
• Black Anodized CNC Machined Aluminum Components
• Teflon-Lined Heat-Treated Spherical Bearings
• Durable Powder Coated Seamless Alloy Body

The FOX Performance Series 985-24-155 front shock is designed for 2017-2018 Ford F-250 and F-350 Super Duty 4WD applications with a 2 to 3.5-inch lift. It combines application-specific valving with race-proven damping control to deliver a comfortable on-road ride, reduced vehicle sway, and predictable handling during off-road driving. Its smooth-body design and Internal Floating Piston (IFP) technology help maintain consistent damping performance across demanding terrain.

Built with a durable aluminum body, the FOX 985-24-155 dissipates heat efficiently while resisting corrosion and harsh environmental conditions. The internal floating piston separates oil from high-pressure nitrogen gas to help minimize aeration and provide fade-resistant performance. A redundant sealing system, heat-treated spherical bearings, and powder-coated seamless alloy construction support long-term durability.

This FOX Performance Series shock is fully serviceable and tunable, allowing it to be maintained or adjusted for extended service life. Black anodized CNC-machined aluminum components and a Teflon-lined bearing system provide reliable operation under demanding use. The shock is intended to increase off-road capability by extending drop-out travel in applicable installations while maintaining performance-focused control on pavement.

What's Included

• One FOX Performance Series IFP front shock

Fitment

Fits 2017-2018 Ford F-250 Super Duty 4WD and 2017-2018 Ford F-350 Super Duty 4WD applications with a 2 to 3.5-inch lift. Confirm vehicle configuration, suspension lift, and installation requirements before ordering.

Features:

• Application-Specific Valving: Tuned for compatible Ford Super Duty applications to provide controlled damping, improved stability, and predictable handling.
• Internal Floating Piston Technology: Separates oil from high-pressure nitrogen gas to reduce aeration and support consistent, fade-resistant performance.
• Durable Aluminum Construction: Aluminum components dissipate heat efficiently and resist corrosion in demanding on-road and off-road environments.
• Fully Serviceable and Tunable: Designed for maintenance and tuning to help extend service life and maintain performance over time.

Fitments:
2017 Ford F-250 Super Duty King Ranch
2017 Ford F-250 Super Duty Lariat
2017 Ford F-250 Super Duty Platinum
2017 Ford F-250 Super Duty XL
2017 Ford F-250 Super Duty XLT
2017 Ford F-350 Super Duty King Ranch
2017 Ford F-350 Super Duty Lariat
2017 Ford F-350 Super Duty Platinum
2017 Ford F-350 Super Duty XL
2017 Ford F-350 Super Duty XLT
2018 Ford F-250 Super Duty King Ranch
2018 Ford F-250 Super Duty Lariat
2018 Ford F-250 Super Duty Limited
2018 Ford F-250 Super Duty Platinum
2018 Ford F-250 Super Duty XL
2018 Ford F-250 Super Duty XLT
2018 Ford F-350 Super Duty King Ranch
2018 Ford F-350 Super Duty Lariat
2018 Ford F-350 Super Duty Limited
2018 Ford F-350 Super Duty Platinum
2018 Ford F-350 Super Duty XL
2018 Ford F-350 Super Duty XLT
2019 Ford F-250 Super Duty King Ranch
2019 Ford F-250 Super Duty Lariat
2019 Ford F-250 Super Duty Limited
2019 Ford F-250 Super Duty Platinum
2019 Ford F-250 Super Duty XL
2019 Ford F-250 Super Duty XLT
2019 Ford F-350 Super Duty King Ranch
2019 Ford F-350 Super Duty Lariat
2019 Ford F-350 Super Duty Limited
2019 Ford F-350 Super Duty Platinum
2019 Ford F-350 Super Duty XL
2019 Ford F-350 Super Duty XLT
2020 Ford F-250 Super Duty King Ranch
2020 Ford F-250 Super Duty Lariat
2020 Ford F-250 Super Duty Limited
2020 Ford F-250 Super Duty Platinum
2020 Ford F-250 Super Duty XL
2020 Ford F-250 Super Duty XLT
2020 Ford F-350 Super Duty King Ranch
2020 Ford F-350 Super Duty Lariat
2020 Ford F-350 Super Duty Limited
2020 Ford F-350 Super Duty Platinum
2020 Ford F-350 Super Duty XL
2020 Ford F-350 Super Duty XLT
2021 Ford F-250 Super Duty King Ranch
2021 Ford F-250 Super Duty Lariat
2021 Ford F-250 Super Duty Limited
2021 Ford F-250 Super Duty Platinum
2021 Ford F-250 Super Duty XL
2021 Ford F-250 Super Duty XLT
2021 Ford F-350 Super Duty King Ranch
2021 Ford F-350 Super Duty Lariat
2021 Ford F-350 Super Duty Limited
2021 Ford F-350 Super Duty Platinum
2021 Ford F-350 Super Duty XL
2021 Ford F-350 Super Duty XLT
2022 Ford F-250 Super Duty King Ranch
2022 Ford F-250 Super Duty Lariat
2022 Ford F-250 Super Duty Limited
2022 Ford F-250 Super Duty Platinum
2022 Ford F-250 Super Duty XL
2022 Ford F-250 Super Duty XLT
2022 Ford F-350 Super Duty King Ranch
2022 Ford F-350 Super Duty Lariat
2022 Ford F-350 Super Duty Limited
2022 Ford F-350 Super Duty Platinum
2022 Ford F-350 Super Duty XL
2022 Ford F-350 Super Duty XLT
2023 Ford F-250 Super Duty King Ranch
2023 Ford F-250 Super Duty Lariat
2023 Ford F-250 Super Duty Limited
2023 Ford F-250 Super Duty Platinum
2023 Ford F-250 Super Duty XL
2023 Ford F-250 Super Duty XLT
2023 Ford F-350 Super Duty King Ranch
2023 Ford F-350 Super Duty Lariat
2023 Ford F-350 Super Duty Limited
2023 Ford F-350 Super Duty Platinum
2023 Ford F-350 Super Duty XL
2023 Ford F-350 Super Duty XLT
2024 Ford F-250 Super Duty King Ranch
2024 Ford F-250 Super Duty Lariat
2024 Ford F-250 Super Duty Limited
2024 Ford F-250 Super Duty Platinum
2024 Ford F-250 Super Duty XL
2024 Ford F-250 Super Duty XLT
2024 Ford F-350 Super Duty King Ranch
2024 Ford F-350 Super Duty Lariat
2024 Ford F-350 Super Duty Limited
2024 Ford F-350 Super Duty Platinum
2024 Ford F-350 Super Duty XL
2024 Ford F-350 Super Duty 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 Raptor
2025 Ford F-150 SSV
2025 Ford F-150 STX
2025 Ford F-150 Tremor
2025 Ford F-150 XL
2025 Ford F-150 XLT
2025 Ford F-150 Lightning Flash
2025 Ford F-150 Lightning Lariat
2025 Ford F-150 Lightning Platinum
2025 Ford F-150 Lightning Pro
2025 Ford F-150 Lightning Pro SSV
2025 Ford F-150 Lightning XLT
2025 Ford F-250 Super Duty King Ranch
2025 Ford F-250 Super Duty Lariat
2025 Ford F-250 Super Duty Platinum
2025 Ford F-250 Super Duty XL
2025 Ford F-250 Super Duty XLT
2025 Ford F-350 Super Duty King Ranch
2025 Ford F-350 Super Duty Lariat
2025 Ford F-350 Super Duty Platinum
2025 Ford F-350 Super Duty XL
2025 Ford F-350 Super Duty XLT
2025 Ford Maverick Lobo
2025 Ford Maverick Tremor
2025 Ford Ranger Lariat
2025 Ford Ranger XL
2025 Ford Ranger XLT
2026 Ford F-250 Super Duty King Ranch
2026 Ford F-250 Super Duty Lariat
2026 Ford F-250 Super Duty Platinum
2026 Ford F-250 Super Duty XL
2026 Ford F-250 Super Duty XLT
2026 Ford F-350 Super Duty King Ranch
2026 Ford F-350 Super Duty Lariat
2026 Ford F-350 Super Duty Platinum
2026 Ford F-350 Super Duty XL
2026 Ford F-350 Super Duty XLT

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