2017–2026 Ford F-250/F-350 Super Duty Front 2.5 Performance Elite Reservoir Shocks (4–6" Lift)

Upgrade your suspension with Fox Performance Elite Series 2.5 Reservoir shocks, engineered to deliver enhanced ride quality, superior control, and consistent performance in demanding conditions. Built using race-proven technology developed in extreme off-road environments, these shocks are designed to handle everything from daily driving to aggressive off-road use. The external reservoir increases oil and nitrogen capacity for improved cooling and fade resistance, while the Dual Speed Compression (DSC) adjuster allows precise tuning for both comfort and performance. Designed as a direct bolt-on upgrade, these shocks provide exceptional damping, stability, and control for lifted Super Duty trucks.

Key Features

2.5" impact-extruded and CNC-machined 6061-T6 aluminum body with Type III hard anodizing for maximum durability and corrosion resistance
7/8" hard chrome-plated, heat-treated alloy steel shaft for strength and long service life
External remote reservoir increases oil and nitrogen capacity for improved cooling and fade resistance
Dual Speed Compression (DSC) adjuster allows precise tuning of low- and high-speed compression damping
Race-developed high-flow piston improves damping performance and bottom-out resistance
Application-specific valving tuned for optimal ride quality and control
Redundant sealing system with main seal, wiper seal, and scraper seal for extended reliability
PTFE-lined, heat-treated alloy steel spherical bearings for smooth articulation
Smooth bore, honed seamless alloy reservoir enhances performance consistency
Aluminum body and reservoir design efficiently dissipate heat under demanding conditions
Engineered to maximize suspension travel in both compression (jounce) and extension (droop)
Remote reservoir mounting designed to clear larger, aggressive tires at full steering lock
Delivers improved comfort, stability, and control across a wide range of terrain

What’s Included

(2) Front 2.5 Performance Elite Reservoir Shocks

Installation

Estimated Install Time: 2–3 hours
Difficulty Level: Moderate
Installation Type: Direct bolt-on
Hardware: Includes necessary bushings and sleeves (factory hardware reused where applicable)

Specifications

Series: Performance Elite
Shock Type: Monotube with Remote Reservoir
Body Diameter: 2.5"
Travel: 9.98"
Extended Length: 27.29"
Compressed Length: 17.31"
Shaft: 7/8" hard chrome-plated steel
Body Material: 6061-T6 aluminum, hard anodized
Reservoir: External smooth body reservoir with DSC adjuster
Mounting: Stem top, eyelet bottom

Fitment

Ford Super Duty – Front (4–6" Lift Applications)

4WD Models:

2017–2026 Ford F-250 Super Duty
2017–2026 Ford F-350 Super Duty

2WD & 4WD Models (Select Trims):

2025 Ford F-250 Super Duty (King Ranch, Lariat, Platinum, XLT)
2023–2026 Ford F-350 Super Duty (King Ranch, Platinum)
2018–2024 Ford F-350 Super Duty (Limited)

Notes

Designed for 4"–6" lifted applications
Sold as a pair
Always verify suspension setup and lift height before ordering