{"product_id":"fox-performance-series-2017-ford-f-250-f-350-rear-shock-12-1-inch-smooth-body-with-external-reservoir","title":"Fox Performance Series 2017+ Ford F-250 \u0026 F-350 Rear Shock - 12.1 Inch Smooth Body with External Reservoir","description":"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.\nApplication specific valving to maximize performance.\nIncrease 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_\n_x000D_\nConsistent 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_\n_x000D_\nBuilt-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.\n\u003cul\u003e\n  \u003cli\u003ePerformance Tuned For Vehicle Specific Application\u003c\/li\u003e\n  \u003cli\u003eAluminum Body Dissipates Heat Faster Than Steel\u003c\/li\u003e\n  \u003cli\u003eBlack Anodized CNC Machined Aluminum Components\u003c\/li\u003e\n  \u003cli\u003eExternal Reservoir System Dissipates Heat Fast\u003c\/li\u003e\n  \u003cli\u003eIncludes Aluminum Reservoir Clamp\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your 2017 Ford F-250 or F-350 with the Fox Performance Series Rear Shock, part number 985-24-174. Designed with the latest shock technology, this performance-tuned shock absorber enhances both on-road comfort and off-road handling. Its race-proven damping control provides a smooth ride on paved roads while maintaining predictable, confident performance in tough off-road conditions. The shock features application-specific valving that optimizes damping characteristics for your vehicle, ensuring a connected ride with less sway and improved stability during challenging terrains. Whether you're tackling rugged trails or cruising city streets, this shock offers a versatile balance of comfort and capability.\u003c\/p\u003e\u003cp\u003eConstructed from high-quality aluminum, the Fox Performance Series shock dissipates heat four times faster than conventional steel shocks, which helps maintain consistent performance during extended use. The aluminum body, combined with a race-developed main piston and a true internal floating piston (IFP), separates gas and oil effectively, preventing fade and ensuring longevity. The external reservoir system further enhances heat dissipation, enabling the shock to perform reliably over prolonged off-road excursions. Fully serviceable and resistant to corrosion, these shocks are built to withstand harsh environments and provide a lifetime of dependable performance.\u003c\/p\u003e\u003cp\u003eFeatures include black anodized CNC machined aluminum components and an aluminum reservoir clamp, emphasizing durability and lightweight design. Designed specifically for your vehicle’s application, the Fox Performance Series shock is an excellent upgrade for those seeking improved off-road capability without sacrificing on-road comfort. Easy to install and built for long-lasting performance, these shocks are a race-proven solution for serious enthusiasts and everyday drivers alike.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003ePerformance tuned for 2017+ Ford F-250 and F-350 applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAluminum body dissipates heat four times faster than steel\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRace-developed main piston for precise damping control\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTrue internal floating piston (IFP) separates gas and oil for fade resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eExternal reservoir system enhances heat dissipation and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes aluminum reservoir clamp for secure installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack anodized CNC machined aluminum components for strength and corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBuilt-to-last, fully serviceable, and resistant to harsh environments\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2017 Ford F-250 Super Duty King Ranch\u003cbr\u003e\n2017 Ford F-250 Super Duty Lariat\u003cbr\u003e\n2017 Ford F-250 Super Duty Platinum\u003cbr\u003e\n2017 Ford F-250 Super Duty XL\u003cbr\u003e\n2017 Ford F-250 Super Duty XLT\u003cbr\u003e\n2017 Ford F-350 Super Duty King Ranch\u003cbr\u003e\n2017 Ford F-350 Super Duty Lariat\u003cbr\u003e\n2017 Ford F-350 Super Duty Platinum\u003cbr\u003e\n2017 Ford F-350 Super Duty XL\u003cbr\u003e\n2017 Ford F-350 Super Duty XLT\u003cbr\u003e\n2018 Ford F-250 Super Duty King Ranch\u003cbr\u003e\n2018 Ford F-250 Super Duty Lariat\u003cbr\u003e\n2018 Ford F-250 Super Duty Limited\u003cbr\u003e\n2018 Ford F-250 Super Duty Platinum\u003cbr\u003e\n2018 Ford F-250 Super Duty XL\u003cbr\u003e\n2018 Ford F-250 Super Duty XLT\u003cbr\u003e\n2018 Ford F-350 Super Duty King Ranch\u003cbr\u003e\n2018 Ford F-350 Super Duty Lariat\u003cbr\u003e\n2018 Ford F-350 Super Duty Limited\u003cbr\u003e\n2018 Ford F-350 Super Duty Platinum\u003cbr\u003e\n2018 Ford F-350 Super Duty XL\u003cbr\u003e\n2018 Ford F-350 Super Duty XLT\u003cbr\u003e\n2019 Ford F-250 Super Duty King Ranch\u003cbr\u003e\n2019 Ford F-250 Super Duty Lariat\u003cbr\u003e\n2019 Ford F-250 Super Duty Limited\u003cbr\u003e\n2019 Ford F-250 Super Duty Platinum\u003cbr\u003e\n2019 Ford F-250 Super Duty XL\u003cbr\u003e\n2019 Ford F-250 Super Duty XLT\u003cbr\u003e\n2019 Ford F-350 Super Duty King Ranch\u003cbr\u003e\n2019 Ford F-350 Super Duty Lariat\u003cbr\u003e\n2019 Ford F-350 Super Duty Limited\u003cbr\u003e\n2019 Ford F-350 Super Duty Platinum\u003cbr\u003e\n2019 Ford F-350 Super Duty XL\u003cbr\u003e\n2019 Ford F-350 Super Duty XLT\u003cbr\u003e\n2020 Ford F-250 Super Duty King Ranch\u003cbr\u003e\n2020 Ford F-250 Super Duty Lariat\u003cbr\u003e\n2020 Ford F-250 Super Duty Limited\u003cbr\u003e\n2020 Ford F-250 Super Duty Platinum\u003cbr\u003e\n2020 Ford F-250 Super Duty XL\u003cbr\u003e\n2020 Ford F-250 Super Duty XLT\u003cbr\u003e\n2020 Ford F-350 Super Duty King Ranch\u003cbr\u003e\n2020 Ford F-350 Super Duty Lariat\u003cbr\u003e\n2020 Ford F-350 Super Duty Limited\u003cbr\u003e\n2020 Ford F-350 Super Duty Platinum\u003cbr\u003e\n2020 Ford F-350 Super Duty XL\u003cbr\u003e\n2020 Ford F-350 Super Duty XLT\u003cbr\u003e\n2021 Ford F-250 Super Duty King Ranch\u003cbr\u003e\n2021 Ford F-250 Super Duty Lariat\u003cbr\u003e\n2021 Ford F-250 Super Duty Limited\u003cbr\u003e\n2021 Ford F-250 Super Duty Platinum\u003cbr\u003e\n2021 Ford F-250 Super Duty XL\u003cbr\u003e\n2021 Ford F-250 Super Duty XLT\u003cbr\u003e\n2021 Ford F-350 Super Duty King Ranch\u003cbr\u003e\n2021 Ford F-350 Super Duty Lariat\u003cbr\u003e\n2021 Ford F-350 Super Duty 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XL\u003cbr\u003e\n2023 Ford F-250 Super Duty XLT\u003cbr\u003e\n2023 Ford F-350 Super Duty King Ranch\u003cbr\u003e\n2023 Ford F-350 Super Duty Lariat\u003cbr\u003e\n2023 Ford F-350 Super Duty Limited\u003cbr\u003e\n2023 Ford F-350 Super Duty Platinum\u003cbr\u003e\n2023 Ford F-350 Super Duty XL\u003cbr\u003e\n2023 Ford F-350 Super Duty XLT\u003cbr\u003e\n2024 Ford F-250 Super Duty King Ranch\u003cbr\u003e\n2024 Ford F-250 Super Duty Lariat\u003cbr\u003e\n2024 Ford F-250 Super Duty Limited\u003cbr\u003e\n2024 Ford F-250 Super Duty Platinum\u003cbr\u003e\n2024 Ford F-250 Super Duty XL\u003cbr\u003e\n2024 Ford F-250 Super Duty XLT\u003cbr\u003e\n2024 Ford F-350 Super Duty King Ranch\u003cbr\u003e\n2024 Ford F-350 Super Duty Lariat\u003cbr\u003e\n2024 Ford F-350 Super Duty Limited\u003cbr\u003e\n2024 Ford F-350 Super Duty Platinum\u003cbr\u003e\n2024 Ford F-350 Super Duty XL\u003cbr\u003e\n2024 Ford F-350 Super Duty XLT\u003cbr\u003e\n2025 Ford Ranger Lariat\u003cbr\u003e\n2025 Ford 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