FOX 2.5 Performance Smooth Body HTO 1.5-2.5″ Rear Lift IFP Shocks for 2011-2024 GMC Sierra 2500HD

Description
FOX 2.5 Performance Smooth Body HTO 1.5-2.5″ Rear Lift IFP Shocks for 2011-2024 GMC Sierra 2500HD

FOX 2.5 Performance Smooth Body HTO 1.5-2.5 inches Rear Lift IFP Shocks for 2011-2024 GMC Sierra 2500HD

Part Number: 987-24-011

Summary: The FOX 2.5 Performance Series HTO shocks are engineered for the 2011-2024 GMC Sierra 2500HD to improve both on and off-road performance through position-sensitive technology. This bolt-on solution utilizes an Internal Floating Piston (IFP) and a 2.5-inch aluminum body to provide consistent damping and efficient heat dissipation. Designed for vehicles with 1.5-2.5 inches of rear lift, these shocks address harsh top-outs by incorporating Hydraulic Top Out (HTO) technology for superior rebound control.

Features

• Internal Floating Piston (IFP): The internal floating piston (IFP) design separates shock oil from high-pressure nitrogen to provide optimized damping and consistent performance.
• Hydraulic Top Out (HTO): A secondary shim stack provides position-sensitive rebound damping control to slow shock shaft speed and reduce harsh top-outs.
• Aluminum Shock Body: The 2.5-inch 6061-T6 impact extruded aluminum body provides efficient heat dissipation and corrosion resistance through Type II clear-anodized plating.
• High-Flow Damping: Velocity-sensitive damping technology provides rapid response to terrain changes to ensure a comfortable and controlled ride.

Technical Specifications

Fitment

• 2011-2024 GMC Sierra 2500HD
• Note: Lift: 1.5-2.5 inches.

What’s Included

• Includes 2 Shocks

Why Choose This Product?

• Engineering Advantage: The Hydraulic Top Out (HTO) piston and Internal Floating Piston (IFP) work in tandem to manage shock shaft speed and prevent oil aeration under high-demand conditions.
• Performance Benefit: Drivers experience increased comfort and reduced harshness, particularly when utilizing larger, more aggressive tires or lifted suspension configurations.

Frequently Asked Questions

What is the benefit of the HTO technology?
Hydraulic Top Out (HTO) technology reduces harsh top-outs by forcing oil through a secondary shim stack, providing better rebound control on and off the pavement.

Are these shocks compatible with stock height trucks?
These shocks are specifically designed for GMC Sierra 2500HD models with 1.5 to 2.5 inches of rear lift.

How does the IFP design improve performance?
The Internal Floating Piston (IFP) separates the nitrogen gas from the shock oil, which prevents oil foaming and ensures consistent damping performance.