FOX 2.5 Performance Smooth Body HTO 1.5-3.5″ Front Lift IFP Shocks for 2011-2019 GMC Sierra 3500HD

Description
FOX 2.5 Performance Smooth Body HTO 1.5-3.5″ Front Lift IFP Shocks for 2011-2019 GMC Sierra 3500HD

FOX 2.5 Performance Smooth Body HTO 1.5-3.5 inches Front Lift IFP Shocks for 2011-2019 GMC Sierra 3500HD

Part Number: 987-24-031

Summary: The FOX 2.5 Performance Series HTO is a high-performance bolt-on shock designed to enhance the handling of the GMC Sierra 3500HD. This series utilizes position-sensitive technology and vehicle-specific valving to manage the increased demands of off-road operation and larger tire fitments. By incorporating an internal floating piston and specialized Hydraulic Top Out (HTO) technology, these shocks provide superior heat dissipation and damping control compared to standard equipment.

Features

• Hydraulic Top Out (HTO): A secondary shim stack provides position-sensitive rebound damping control to ensure reduced harsh top-outs and increased comfort.
• Internal Floating Piston (IFP): The internal floating piston (IFP) separates shock oil from high-pressure nitrogen provides optimized damping to ensure consistent performance.
• Aluminum Shock Body: The 2.5-inch impact extruded 6061-T6 aluminum body provides efficient heat dissipation to ensure resistance to corrosion and fade.
• Hard Chrome Shaft: A 5/8” hard chrome shaft provides robust structural integrity to ensure durability in demanding environments.

Technical Specifications

Fitment

• 2011-2019 GMC Sierra 3500HD
• Note: Lift: 1.5-3.5 inches

What’s Included

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

Why Choose This Product?

• Engineering Advantage: These shocks feature position-sensitive damping and a larger 2.5-inch body for increased oil capacity and improved thermal management.
• Performance Benefit: Drivers experience a significant reduction in harsh top-out events and improved rebound control when running heavier, aggressive tires.

Frequently Asked Questions

What is Hydraulic Top Out (HTO) technology?
HTO is a position-sensitive rebound damping system that uses a secondary shim stack to slow down shock shaft speed, reducing harsh top-outs.

What lift height are these shocks compatible with?
These shocks are configured for front lift heights between 1.5 and 3.5 inches on the GMC Sierra 3500HD.

How does the Internal Floating Piston (IFP) improve ride quality?
The IFP separates the shock oil from the high-pressure nitrogen gas, which optimizes damping and prevents the oil from foaming.