FOX 2.5 Performance Smooth Body HTO 2-3.5″ Rear Lift IFP Shocks for 2017-2025 Ford F-350 Super Duty Extended Cab Pickup 4WD

SKU: 2x987-24-003_n2

Description
FOX 2.5 Performance Smooth Body HTO 2-3.5″ Rear Lift IFP Shocks for 2017-2025 Ford F-350 Super Duty Extended Cab Pickup 4WD

FOX 2.5 Performance Smooth Body HTO 2-3.5 inches Rear Lift IFP Shocks for 2017-2025 Ford F-350 Super Duty Extended Cab Pickup 4WD

Part Number: 987-24-003

Summary: The FOX 2.5 Performance Series HTO shock is a bolt-on solution designed to improve both on and off-road performance for the Ford F-350 Super Duty. Featuring an Internal Floating Piston (IFP) and a 2.5-inch aluminum body, these shocks are engineered to dissipate heat efficiently while preventing corrosion. The integration of Hydraulic Top Out (HTO) technology provides position-sensitive rebound damping, reducing harsh top-outs and increasing ride comfort for vehicles with heavier tires or increased lift heights.


Features

  • Internal Floating Piston (IFP): The IFP design separates the shock oil from the high-pressure nitrogen to optimize damping and provide consistent performance.
  • Hydraulic Top Out (HTO) Piston: This secondary shim stack provides position-sensitive rebound damping control to slow down shock shaft speed and reduce harsh top-outs.
  • 6061-T6 Aluminum Shock Body: A 2.5-inch impact extruded aluminum body with Type II clear-anodized plating provides efficient heat dissipation to ensure resistance to fade and corrosion.
  • Hard Chrome Shaft: A 5/8-inch hard chrome shaft provides durability to ensure long-term operation under various driving conditions.


Technical Specifications

Specification Value
Series Performance
Position Rear
Collapsed Length 19.39
Extended Length 30.58
Upper Mount Eyelet
Lower Mount Eyelet
Notes Lift: 2-3.5 inches


Fitment

  • 2017-2025 Ford F-350 Super Duty Extended Cab Pickup 4WD
  • Note: Lift: 2-3.5 inches.


What’s Included

  • Includes 2 Shocks


Why Choose This Product?

  • Engineering Advantage: The use of an Internal Floating Piston (IFP) within a large 2.5-inch aluminum body allows for superior heat management and consistent damping compared to standard designs.
  • Performance Benefit: Drivers experience increased comfort and controlled rebound, particularly when managing the added mass of aggressive tires or lifted suspension configurations.


Frequently Asked Questions

What is the benefit of the Internal Floating Piston (IFP)?
The Internal Floating Piston (IFP) separates the shock oil from the high-pressure nitrogen, which optimizes damping and prevents oil aeration.

How does Hydraulic Top Out (HTO) technology work?
HTO technology forces shock oil through a secondary shim stack to slow down shock shaft speed, which reduces harsh top-outs and improves ride comfort.

What lift height are these shocks compatible with?
Based on the fitment notes, these shocks are configured for vehicles with 2 to 3.5 inches of rear lift.


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    $659.90

    49 in stock

    49 in stock

    2-5 Day Transit Time