FOX 2.5 Performance Smooth Body HTO 0-1″ Front Lift IFP Shocks for 2020-2024 GMC Sierra 2500HD

Description
FOX 2.5 Performance Smooth Body HTO 0-1″ Front Lift IFP Shocks for 2020-2024 GMC Sierra 2500HD

FOX 2.5 Performance Smooth Body HTO 0-1 inches Front Lift IFP Shocks for 2020-2024 GMC Sierra 2500HD

Part Number: 987-24-008

Summary: The FOX 2.5 Performance Series HTO is a bolt-on smooth body shock designed to improve both on and off-road performance for the GMC Sierra 2500HD. Featuring an Internal Floating Piston (IFP) and Hydraulic Top Out (HTO) technology, this shock addresses the harshness often associated with heavy wheel/tire combinations and suspension extensions. The 2.5-inch aluminum body provides increased damping capacity and superior heat dissipation compared to smaller, conventional shocks.

Features

• Internal Floating Piston (IFP): The internal floating piston (IFP) separates the shock oil from the high-pressure nitrogen to provide consistent damping by preventing aeration.
• Hydraulic Top Out (HTO): A secondary shim stack provides position-sensitive rebound damping control to ensure reduced harshness during full suspension extension.
• 6061-T6 Aluminum Body: The 2.5-inch impact extruded aluminum body with Type II clear-anodized plating provides efficient heat dissipation and corrosion resistance to ensure long-term performance.
• High-Flow Velocity-Sensitive Damping: Vehicle-specific valving and larger pistons provide increased damping capacity to ensure a controlled ride on and off the pavement.

Technical Specifications

Fitment

• 2020-2024 GMC Sierra 2500HD
• Note: Lift: 0-1 inch

What’s Included

• Includes 2 Shocks

Why Choose This Product?

• Engineering Advantage: The combination of a large 2.5-inch diameter aluminum body and Hydraulic Top Out technology allows for greater oil volume and specialized rebound control that standard shocks cannot provide.
• Performance Benefit: Drivers experience a significant reduction in “top-out” clunking and improved control when running larger, more aggressive tires.

Frequently Asked Questions

What is the benefit of the Hydraulic Top Out (HTO) feature?
HTO technology uses a secondary shim stack to slow down shock shaft speed during extension, reducing harsh top-outs and increasing comfort.

Does this shock help with heavier tires?
Yes, the HTO technology and increased damping capacity are specifically beneficial for applications using heavier, aggressive tires.

What is the construction of the shock body?
The shock features a 2.5-inch impact extruded 6061-T6 aluminum body with Type II clear-anodized plating for heat management and corrosion protection.