FOX 2.5 Performance Smooth Body HTO 0-1″ Rear Lift IFP Shocks for 2011-2024 GMC Sierra 2500HD

Description
FOX 2.5 Performance Smooth Body HTO 0-1″ Rear Lift IFP Shocks for 2011-2024 GMC Sierra 2500HD

FOX 2.5 Performance Smooth Body HTO 0-1 inches Rear Lift IFP Shocks for 2011-2024 GMC Sierra 2500HD

Part Number: 987-24-009

Summary: The FOX 2.5 Performance Series HTO is a high-capacity bolt-on shock designed to enhance the handling and comfort of the GMC Sierra 2500HD. Featuring position-sensitive damping technology and Hydraulic Top Out (HTO), these shocks address the harshness often associated with heavy-duty suspension cycling. The 2.5-inch aluminum body provides superior heat dissipation and corrosion resistance to maintain consistent performance during both on-road towing and off-road use.

Features

• 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.
• Internal Floating Piston (IFP): A high-pressure nitrogen-charged internal chamber separates shock oil from gas to eliminate aeration and optimize damping.
• 6061-T6 Aluminum Body: A 2.5-inch impact-extruded body with Type II clear-anodized plating provides efficient heat dissipation and prevents corrosion.
• Velocity-Sensitive Damping: A high-flow piston design provides vehicle-specific valving to ensure rapid response to terrain changes.
• Hard Chrome Shaft: A 5/8-inch hard chrome-plated heat-treated alloy steel shaft provides a durable surface for long-term seal life.

Technical Specifications

Fitment

• 2011-2024 GMC Sierra 2500HD
• Note: Lift: 0-1 inch

What’s Included

• Includes 2 Shocks

Why Choose This Product?

• Engineering Advantage: The integration of Hydraulic Top Out (HTO) technology provides position-sensitive rebound control, specifically engineered to manage the increased mass of heavier wheel and tire packages.
• Performance Benefit: Drivers experience increased damping capacity and a significant reduction in harsh top-out events, resulting in a more composed and comfortable ride on and off the pavement.

Frequently Asked Questions

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

Do these shocks help with larger tires?
Yes, the HTO system is particularly beneficial after installing heavier, aggressive tires by managing the rebound forces more effectively than standard shocks.

Are these shocks corrosion resistant?
Yes, the 2.5-inch 6061-T6 aluminum body features Type II clear-anodized plating to prevent corrosion and efficiently dissipate heat.