FOX 987-24-021 2.5 Performance HTO Rear Shock for 17-25 Ford F250/F350 4-6" Lift

Vehicle Fitment

• 2017-2025 Ford F-250 Super Duty, 4WD, Rear
• 2017-2025 Ford F-350 Super Duty, 4WD, Rear

Fitment Notes

• Rear shock -- sold and installed individually; replace in pairs
• Designed for lifted trucks with 4-6" rear suspension lift
• Not compatible with stock ride height or front axle
• Not for chassis cab variants

Features

• 2.5" extruded 6061-T6 aluminum shock body with Type II anodizing
• Internal Floating Piston (IFP) separates oil and nitrogen
• Hydraulic Top-Out (HTO) system reduces harsh top-out events
• Vehicle-specific high-flow valving tuned for Super Duty trucks
• 5/8" hard-chrome shock shaft with redundant sealing system
• Fully rebuildable and re-tunable design
• Clear-anodized finish resists corrosion and heat fade
• Proudly made in USA with Fox's race-proven shock tech

Specifications

• Extended length: 33.88"; Compressed length: 21.29"; Travel: 12.69"
• Top/bottom mount: eyelet
• Rear lift compatibility: 4-6"
• Drivetrain: 4WD only
• Sold individually -- use two per vehicle

Included Components

• 1x FOX 987-24-021 Performance Series HTO rear shock
• Pre-installed bushings and mounting hardware

Product Description

The FOX 987-24-021 is a rear Performance Series 2.5" hydraulic top-out shock designed specifically for 2017-2025 Ford F-250 and F-350 Super Duty trucks with 4-6" rear lift kits. It features an extruded 6061-T6 aluminum body, internal floating piston, and hydraulic top-out valve to maintain smooth compression and rebound control even under heavy loads or aggressive terrain .

With 12.69" of travel and precise valving optimized for lifted Super Duty trucks, these shocks deliver enhanced ride comfort and off-road performance. The clear-anodized finish, factory sealing, and rebuildable construction ensure lasting durability. Sold individually, they require two units per vehicle to ensure balanced handling.

Fitment is validated for rear 4WD F-250 and F-350 models from 2017-2025 equipped with 4-6" lift kits. Not suitable for stock-height trucks, front use, or chassis cab variants. Backed by Fox's warranty and race heritage, these shocks are ideal for serious off-road and overlanding builds.