FOX 2.5 Performance Series IFP HTO Shock

2014–2025 Ram 2500 / 3500 6.7L Diesel, 6.4L 392, and 2014–2018 Ram 2500 / 3500 5.7L Hemi

Part #: 987-24-045

Overview

The FOX 2.5 Performance Series Internal Floating Piston (IFP) Hydraulic Top Out (HTO) shock absorber is engineered to enhance the ride quality and handling of Ram 2500 and 3500 trucks from 2014 through 2025. Designed specifically for models equipped with 6.7L Diesel, 6.4L 392, and 5.7L Hemi engines, this front shock provides a 2 to 3-inch lift capability. It delivers superior on- and off-road performance by combining advanced damping technology with durable construction.

Ideal for truck owners who demand improved suspension response and comfort, especially when running heavier aggressive tires or lifted beyond factory specifications, the FOX 2.5 Performance Series shock ensures controlled rebound and reduces harsh top-out impacts. This bolt-on upgrade maintains factory fitment while significantly enhancing driving dynamics.

Key Features

The FOX 2.5 Performance Series IFP HTO shock incorporates cutting-edge technology and robust design elements to optimize suspension performance:

• 2.5-inch shock body with Internal Floating Piston (IFP) separates shock oil from high-pressure nitrogen for consistent damping
• Hydraulic Top Out (HTO) technology provides position-sensitive rebound control, reducing harsh top-outs and improving ride comfort
• Vehicle-specific valving tailored for Ram 2500 and 3500 models to enhance both on-road handling and off-road capability
• Type II anodized aluminum body resists corrosion and efficiently dissipates heat for extended shock life
• Larger piston design increases damping capacity for improved control over rough terrain and heavy loads
• Bolt-on installation maintains factory mounting points with no modifications required
• Optimized for lifted trucks with 2 to 3 inches of front suspension lift
• Improves ride quality when paired with heavier, aggressive tires

Construction & Design

Built with durability and performance in mind, the FOX 2.5 Performance Series shock features a high-strength anodized aluminum body that resists corrosion and effectively manages heat buildup during demanding driving conditions. The internal floating piston design separates the shock oil from nitrogen gas, preventing aeration and ensuring consistent damping performance throughout the shock’s travel.

The Hydraulic Top Out (HTO) system uses a secondary shim stack to control the shock shaft speed during rebound, providing a smoother top-out feel and reducing harsh impacts. This advanced valving technology is especially beneficial for lifted trucks and those equipped with larger tires, where suspension travel and rebound control are critical for maintaining comfort and stability.

Installation & Fitment

The FOX 2.5 Performance Series IFP HTO shock is a direct bolt-on replacement for the front shocks on Ram 2500 and 3500 trucks from 2014 to 2025 with 6.7L Diesel, 6.4L 392, and 2014–2018 5.7L Hemi engines. Installation requires no special tools or modifications, preserving factory mounting points and alignment. This shock is designed to accommodate 2 to 3 inches of front lift, making it an ideal upgrade for lifted trucks seeking enhanced suspension performance and ride quality.

What's Included

• One FOX 2.5 Performance Series IFP HTO front shock absorber
• All necessary mounting hardware for bolt-on installation
• Installation instructions

Ideal For

This shock is perfect for Ram 2500 and 3500 owners who want to improve their truck’s suspension performance, especially those who have installed a 2 to 3-inch front lift or run larger, aggressive tires. It is well suited for enthusiasts who frequently drive on rough terrain or require enhanced ride comfort and control both on and off the pavement. The FOX 2.5 Performance Series shock offers a balanced combination of durability, advanced damping technology, and ease of installation for serious truck performance upgrades.

FOX (RideFOX) is a top-tier suspension brand producing high-performance shocks and components for trucks, UTVs, and motorsports applications. Known for race-proven engineering and tunability, FOX products are built to handle harsh impacts, high speeds, and demanding off-road conditions while keeping the vehicle controlled and composed.