FOX Performance Series 2.0 IFP Front Shock - 4-5 Inch Lift | Ford F-250/F-350 Super Duty 4WD (17-26) (985-24-156)

Fits 2017–2026 Ford F-250 & F-350 Super Duty 4WD
Fits 2005–2019 models with 4-inch lift
Fits 2020–2026 Non-Tremor models with 4.5–5.5-inch lift
Fits 2020–2026 Tremor models with 2.5–3.5-inch lift

Part #: 985-24-156

Overview

The FOX Performance Series 2.0 IFP Front Shock is engineered to improve ride quality, suspension control, and durability for lifted 2017–2026 Ford F-250 and F-350 Super Duty 4WD trucks. Designed around FOX's race-proven monotube Internal Floating Piston (IFP) technology, this shock delivers consistent damping, improved stability, and excellent heat dissipation for demanding towing, hauling, and off-road use. The lightweight 6061-T6 aluminum body resists corrosion while dissipating heat more efficiently than conventional steel-body shocks, ensuring dependable performance on and off the pavement.

Key Features

• Fits 2017–2026 Ford F-250 & F-350 Super Duty 4WD
• Designed for:
  • 2005–2019: 4-inch lift
  • 2020–2026 Non-Tremor: 4.5–5.5-inch lift
  • 2020–2026 Tremor: 2.5–3.5-inch lift
• FOX Performance Series 2.0 IFP monotube shock
• Internal Floating Piston (IFP) technology separates oil from nitrogen gas
• 2.0-inch impact-extruded 6061-T6 aluminum shock body
• Clear anodized finish resists corrosion
• Race-developed high-flow piston
• Vehicle-specific performance valving
• 5/8-inch hard chrome-plated heat-treated alloy steel shaft
• CNC-machined black anodized aluminum components
• Rebuildable and serviceable design
• Direct bolt-on installation
• Backed by FOX's Limited Lifetime Warranty

Construction & Design

The Performance Series 2.0 IFP shock features a precision-machined 6061-T6 aluminum body that dissipates heat quickly while resisting corrosion. FOX's Internal Floating Piston design separates the shock oil from the high-pressure nitrogen chamber to eliminate aeration and maintain consistent damping performance. A race-developed high-flow piston, premium sealing system, and application-specific valving ensure exceptional ride quality and durability in demanding environments.

Driving Feel & Feedback

Whether you're towing heavy equipment, hauling payloads, or driving off-road, the FOX Performance Series 2.0 IFP shock delivers improved steering control, reduced body motion, and greater confidence over rough terrain. The monotube design provides consistent damping during extended use, reducing shock fade while maintaining a comfortable ride on the highway and excellent control off-road.

Installation & Fitment

The FOX 985-24-156 installs as a direct replacement using the factory mounting locations. No drilling or permanent modifications are required. It is specifically valved for lifted Super Duty applications and should only be installed on vehicles within the recommended lift range for proper suspension travel and performance.

What's Included

• (1) FOX Performance Series 2.0 IFP Front Shock
• Bushings and sleeves
• Installation instructions

Ideal For

The FOX Performance Series 2.0 IFP Front Shock is ideal for Super Duty owners with lifted trucks who want premium ride quality, improved suspension control, and dependable durability. Whether your truck is built for towing, work, overlanding, or off-road adventures, this FOX Performance Series shock delivers race-inspired performance with factory-quality reliability.