FOX Performance Series 2.5 IFP HTO Rear Shock for 4 to 6-Inch Lift (11-26 Sierra 2500 HD)Find parts that fit my vehicle

Performance Rear Shock. The FOX Performance Series 2.5 IFP HTO Rear Shock for 4 to 6-Inch Lift is engineered to enhance both on- and off-road ride quality and control for lifted trucks. It leverages position-sensitive technology to deliver superior damping that reduces harsh top-out and increases comfort—especially beneficial when paired with aggressive tires or lifts beyond factory specifications. This shock improves the driving experience by maintaining vehicle stability and ride comfort under demanding conditions.

Construction and Appearance. Built from impact-extruded 6061-T6 aluminum with a Type II clear anodized finish, the shock body optimizes heat dissipation and offers excellent corrosion resistance. It includes a durable 5/8-inch hard chrome shaft, an internal floating piston to separate shock oil from high-pressure nitrogen, and a hydraulic top-out piston for refined rebound damping control. The result is a polished, corrosion-resistant aluminum body with precise engineering, visible in the eyelet mounts.

Installation. This shock is designed for straightforward bolt-on installation requiring no drilling or modifications. It serves as a direct replacement on vehicles lifted between 4 and 6 inches, making it an accessible upgrade for both enthusiasts and professionals.

Warranty. This product comes with a standard warranty that covers defects in materials and workmanship, ensuring reliable performance and support.

Application. Specifically designed for 2011 to 2026 GMC Sierra 2500 HD models with a 4-6 inch rear lift, this shock meets the needs of lifted heavy-duty trucks without requiring additional modifications.

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