FOX 2.5 Performance Smooth Body HTO 6.5″ Front Lift IFP Shocks for 2020-2024 GMC Sierra 2500HD

Description
FOX 2.5 Performance Smooth Body HTO 6.5″ Front Lift IFP Shocks for 2020-2024 GMC Sierra 2500HD

FOX 2.5 Performance Smooth Body HTO 6.5 inches Front Lift IFP Shocks for 2020-2024 GMC Sierra 2500HD

Part Number: 987-24-024

Summary: The FOX 2.5 Performance Series HTO shocks are engineered to enhance the on and off-road performance of lifted GMC Sierra 2500HD trucks. Featuring an Internal Floating Piston (IFP) and a 2.5-inch impact-extruded aluminum body, these shocks are designed to manage heat and provide consistent damping across various terrains. These units specifically incorporate Hydraulic Top Out (HTO) technology to address the harsh top-outs often associated with heavy wheel and tire combinations and increased lift heights.

Features

• Internal Floating Piston (IFP): The internal floating piston (IFP) separates the shock oil from the high-pressure nitrogen to provide optimized damping and prevent oil aeration.
• Hydraulic Top Out (HTO): A secondary shim stack provides position-sensitive rebound damping control to slow down shock shaft speed and reduce harsh top-outs.
• 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 durability.
• High-Flow Velocity-Sensitive Damping: Vehicle-specific valving and a 5/8” hard chrome shaft provide rapid response to ensure consistent control during performance driving.

Technical Specifications

Fitment

• 2020-2024 GMC Sierra 2500HD
• Note: Lift: 6.5 inches For Use With Raised Torsion Systems That Require Lower Eyelet Mounting. Will Not Fit OE Mounts;

What’s Included

• Includes 2 Shocks
• Hydraulic Top Out (HTO) piston hardware

Why Choose This Product?

• Engineering Advantage: The integration of an Internal Floating Piston (IFP) within a larger 2.5-inch aluminum body allows for superior heat management and damping consistency compared to standard diameter shocks.
• Performance Benefit: Drivers experience increased comfort and reduced mechanical harshness through position-sensitive rebound control, specifically designed for vehicles with aggressive tires and 6.5-inch lifts.

Frequently Asked Questions

Will these shocks fit a stock GMC Sierra 2500HD?
No, these shocks are designed for vehicles with a 6.5-inch front lift and require raised torsion systems that use lower eyelet mounting. They will not fit OE mounts.

What is the benefit of the Hydraulic Top Out (HTO) technology?
HTO technology reduces harsh top-outs by forcing shock oil through a secondary shim stack, which slows the shock shaft speed and increases ride comfort.

How does the IFP design improve performance?
The Internal Floating Piston (IFP) separates the high-pressure nitrogen gas from the shock oil, which prevents aeration and allows the vehicle-specific valving to provide consistent, fade-free damping.