Fox 2.5 Performance Series IFP Front Shock - Smooth Body, 4-6 in Lift | 2020-2026 GMC Sierra 3500HD

The Fox 2.5 Performance Series Smooth Body IFP Front Shock fits the 2020-2026 GMC Sierra 3500HD and is valved for trucks running 4-6in of front lift.

Aluminum body construction and a true internal floating piston deliver fade-resistant damping on and off road.

Product Overview

This is a monotube 2.5in diameter performance shock with a smooth aluminum body and race-developed main piston. The internal floating piston (IFP) separates gas and oil to prevent cavitation and maintain consistent damping under heavy use.

Extended shock travel improves droop and articulation off-road, while application-specific valving reduces body roll on the highway. Aluminum dissipates heat four times better than steel, keeping the 3500HD composed under towing and trail loads.

Features & Specifications

• Fits: 2020-2026 GMC Sierra 3500HD
• Provides 4" of front lift
• Designed for trucks with 4-6in of front lift
• Hydraulic Top Out (HTO) reduces harsh top-out for a smoother ride, especially on lifted trucks or aggressive tires
• 2.5in diameter smooth aluminum body
• True internal floating piston (IFP) separates gas and oil
• Race-developed main piston with application-specific valving
• Aluminum dissipates heat 4x better than steel
• Fully serviceable and rebuildable
• Extended droop travel for improved off-road articulation

Fitment

This part fits the following vehicles: