Fox Shocks 2.5 Performance Series 4WD (987-24-020) for 2017-2025 Powerstroke 6.7L

Fox Shocks 2.5 Performance Series 4WD (987-24-020) for 2017–2025 Powerstroke 6.7L

High-Performance Suspension Upgrade for Super Duty Trucks

The FOX 2.5 Performance Series shock is designed to improve ride quality, control, and durability on 2017–2025 Powerstroke 6.7L Super Duty trucks equipped with 4WD. Built as a direct bolt-on replacement, this shock delivers increased damping capacity for both on-road comfort and off-road stability. As a result, drivers experience better control over rough terrain while maintaining smooth handling during daily driving.

Advanced Shock Design with Larger Piston Technology

At the core of this suspension upgrade is a 2.5-inch aluminum shock body paired with a larger internal piston. This design increases oil volume and improves damping consistency under demanding conditions. Additionally, the shock features an internal floating piston (IFP), which separates shock oil from high-pressure nitrogen gas. Because of this separation, damping performance remains stable while heat buildup is reduced during extended use.

Hydraulic Top Out Technology for Added Comfort

One of the standout features of this shock is Hydraulic Top Out (HTO) technology. This system provides position-sensitive rebound damping, which helps reduce harsh top-out events. When the suspension reaches full extension, shock oil is forced through a secondary shim stack to slow shaft speed. Consequently, ride comfort improves, especially on trucks running larger tires or suspension lifts beyond factory specifications.

Built for Heat Management and Corrosion Resistance

Equally important, the shock body is constructed from Type II anodized aluminum, which efficiently dissipates heat while resisting corrosion. This is especially beneficial for trucks that see mixed-use driving, including towing, off-road travel, and harsh weather conditions. Because heat is managed more effectively, damping performance remains consistent even during aggressive driving.

Bolt-On Installation with Vehicle-Specific Valving

The FOX 2.5 Performance Series HTO shock features vehicle-specific valving tuned for the Super Duty platform. Installation is fully bolt-on and does not require custom fabrication. Therefore, this upgrade is ideal for owners seeking improved ride quality and control without complicated suspension modifications.

Designed for Comfort, Control, and Capability

Ultimately, these shocks are well suited for drivers who want better suspension performance across a wide range of driving conditions. Whether you are navigating uneven terrain, towing heavy loads, or upgrading a lifted truck, this shock provides controlled damping and improved ride comfort without sacrificing durability.