FOX 2.5 Performance Smooth Body HTO 4-6″ Front Lift IFP Shocks for 2011-2019 GMC Sierra 2500HD

Description
FOX 2.5 Performance Smooth Body HTO 4-6″ Front Lift IFP Shocks for 2011-2019 GMC Sierra 2500HD

FOX 2.5 Performance Smooth Body HTO 4-6 inches Front Lift IFP Shocks for 2011-2019 GMC Sierra 2500HD

Part Number: 987-24-032

Summary: The FOX 2.5 Performance Series HTO shocks are engineered to enhance the handling of GMC Sierra 2500HD trucks equipped with 4-6 inches of front lift. These shocks feature an Internal Floating Piston (IFP) and Hydraulic Top Out (HTO) technology to provide position-sensitive rebound control on and off the pavement. By utilizing a 2.5-inch impact-extruded aluminum body, these shocks efficiently manage heat and resist corrosion while delivering high-flow velocity-sensitive damping for improved ride quality.

Features

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

Technical Specifications

Fitment

• 2011-2019 GMC Sierra 2500HD
• Note: Lift: 4-6 inches. Not For Use With Lift Kits That Change OE Mounts.

What’s Included

• Includes 2 Shocks

Why Choose This Product?

• Engineering Advantage: The combination of a large-bore 2.5-inch aluminum body and Internal Floating Piston (IFP) technology ensures superior heat management and aeration prevention compared to standard shock designs.
• Performance Benefit: Hydraulic Top Out (HTO) technology specifically addresses the increased mass of heavier tires, slowing shock shaft speed at the end of its travel for a smoother, more controlled ride.

Frequently Asked Questions

What is the benefit of the HTO technology?
Hydraulic Top Out (HTO) technology reduces harsh top-outs by forcing shock oil through a secondary shim stack, which is especially beneficial for vehicles with larger tires or higher lifts.

Can these shocks be used with any lift kit?
These shocks are designed for 4-6 inches of lift but are not for use with lift kits that change the original equipment (OE) mounts.

What does the IFP do in this shock?
The Internal Floating Piston (IFP) separates the high-pressure nitrogen gas from the shock oil, which prevents aeration and allows the velocity-sensitive damping to remain consistent.