FOX Performance Series 2.5 Shock for 11-25 GMC Sierra 2500/3500 HD with 5.1-Inch Lift, Part FOX987-24-036

FOX Performance Series shocks contain the latest in shock technology to transform the performance of your Truck or SUV. They use our race-proven damping control to provide a comfortable on-road ride and predictable off-road handling in even the toughest conditions. Application specific valving to maximize performance. Increase your vehicle's off-road capability by extending drop-out travel in most applications. Experience on-road comfort with performance-minded shock valving for a connected ride with less vehicle sway. Tuned specifically for your vehicle’s application._x000D__x000D_ _x000D__x000D_ Consistent and fade-resistant performance due to high-quality materials: aluminum bodies, race-developed main piston, and a true internal floating piston (IFP) to separate gas and oil._x000D__x000D_ _x000D__x000D_ Built-to-last, torture-tested and race-proven to give a lifetime of great rides. FOX products are built from aluminum, dissipating heat four times better than conventional materials. All FOX shocks are fully serviceable and resistant to corrosion and harsh environments.

• 2.5 in. Impact Extruded 6061-T6 Aluminum Shock Body
• 2.5” Impact extruded 6061-T6 aluminum shock body
• High-flow velocity-sensitive damping
• Type II clear-anodized body plating
• Fully rebuildable and re-tunable
• Internal floating piston (IFP)
• Hydraulic Top Out (HTO) piston
• Internal Floating Piston [IFP]
• Hydraulic Top Out [HTO] Piston
• Application specific tune
• 5/8 in. Hard Chrome Shaft
• 5/8” hard chrome shaft
• Corrosion resistant

The FOX Performance Series shock, part number FOX987-24-036, is engineered for 2011-2025 GMC Sierra 2500 HD and 3500 HD trucks equipped with approximately 5.1 inches of suspension lift. This smooth-body shock uses race-proven damping technology and application-specific valving to improve ride control, reduce vehicle sway, and provide predictable handling on pavement and challenging off-road terrain.

Its 2.5-inch impact-extruded 6061-T6 aluminum body helps dissipate heat efficiently for consistent, fade-resistant performance. A high-flow velocity-sensitive damping system works with the internal floating piston to separate gas and oil, helping maintain controlled damping during demanding driving conditions. The hydraulic top-out piston further improves suspension control through extended travel and rebound events.

Built for long-term service, this FOX shock features a Type II clear-anodized finish, corrosion-resistant construction, and a 5/8-inch hard chrome shaft. The unit is fully rebuildable and re-tunable, allowing continued maintenance and performance optimization over its service life. It is designed to increase off-road capability while maintaining a comfortable, connected on-road ride.

What's Included

• One FOX Performance Series smooth-body shock
• Application-specific damping calibration

Fitment

Designed for 2011-2025 GMC Sierra 2500 HD and 3500 HD applications with approximately 5.1 inches of lift. Confirm vehicle configuration, suspension lift, and shock position before ordering.

Features:

• Application-Specific Valving: Tuned for compatible GMC Sierra HD suspension configurations to deliver controlled handling and a balanced on-road ride.
• Aluminum Shock Body: The 2.5-inch impact-extruded 6061-T6 aluminum body dissipates heat efficiently for consistent performance.
• Internal Floating Piston: Separates gas and oil to help maintain stable damping and resist performance fade.
• Rebuildable Construction: Fully serviceable and re-tunable design supports long-term maintenance and performance adjustment.

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Units Per Sku: 1