Description

2017–2026 Ford F-250 / F-350 Rear Fox 2.5 Factory Race Series Reservoir Shocks (4–6” Lift)

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Upgrade your Super Duty’s rear suspension with Fox Factory Race Series 2.5 Reservoir Shocks—engineered for serious performance both on and off the road.

Built from FOX’s race-proven off-road technology, these shocks deliver exceptional control, improved damping, and consistent performance under extreme conditions. The external reservoir design increases oil and nitrogen capacity, helping reduce fade while maintaining smooth, controlled ride quality even under heavy use.

Whether you’re towing, daily driving, or pushing your truck off-road, these shocks provide the confidence and performance your suspension needs.

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Key Features

• Fox Factory Race Series 2.5 remote reservoir shocks
• Designed for 4”–6” lifted Super Duty trucks
• External reservoir increases oil capacity and cooling
• Race-developed high-flow piston for improved damping control
• Application-specific valving for optimal ride quality
• 7/8″ hard chrome plated shaft for strength and durability
• CNC-machined billet aluminum components with black anodized finish
• Zinc-plated seamless steel body with double-clear coat protection
• Bolt-on installation for rear suspension applications

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Specifications

• Series: Factory Race Series
• Shock Type: 2.5 Reservoir Smooth Body
• Position: Rear
• Lift Range: 4″–6″
• Travel: 13.56″
• Extended Length: 35.01″
• Compressed Length: 21.45″
• Mounting: Eyelet / Eyelet

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Construction Details

• Body: 2.5″ smooth bore zinc-plated seamless steel
• Finish: Double clear-coated for long-term corrosion resistance
• Shaft: 7/8″ heat-treated alloy steel with hard chrome plating
• Piston: Race-developed high-flow design
• Valving: Vehicle-specific tuning for maximum performance
• Sealing System: Multi-layer redundant seal pack (main, wiper, scraper)
• Bearings: PTFE-lined spherical bearings for smooth articulation

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Fitment

2017–2026 Ford F-250 Super Duty (4WD)
2017–2025 Ford F-350 Super Duty (4WD)

• Fits rear suspension
• Designed for trucks with 4”–6” lift kits
• Compatible with most aftermarket lift systems

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Installation

• Difficulty: Moderate
• Estimated Time: 1–2 hours
• Install Type: Direct bolt-on

Factory mounting hardware may be reused unless otherwise specified

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What’s Included

• (2) Fox 2.5 Factory Race Series Rear Reservoir Shocks
• Reservoir mounting hardware (if applicable)

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