• Fox 2.5 Performance Series IFP Smooth Body Front Shock - 1.5-3.5 in Lift | 2015-2019 GMC Sierra 3500HD - Stateside Performance - Shocks and Struts - FOX - Fox 2.5 Performance Series IFP Smooth Body Front Shock - 1.5-3.5 in Lift | 2015-2019 GMC Sierra 3500HD
  • Fox 2.5 Performance Series IFP Smooth Body Front Shock - 1.5-3.5 in Lift | 2015-2019 GMC Sierra 3500HD - Stateside Performance - Shocks and Struts - FOX - Fox 2.5 Performance Series IFP Smooth Body Front Shock - 1.5-3.5 in Lift | 2015-2019 GMC Sierra 3500HD
  • Fox 2.5 Performance Series IFP Smooth Body Front Shock - 1.5-3.5 in Lift | 2015-2019 GMC Sierra 3500HD - Stateside Performance - Shocks and Struts - FOX - Fox 2.5 Performance Series IFP Smooth Body Front Shock - 1.5-3.5 in Lift | 2015-2019 GMC Sierra 3500HD
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FOX987-24-031

FOX

Fox 2.5 Performance Series IFP Smooth Body Front Shock - 1.5-3.5 in Lift | 2015-2019 GMC Sierra 3500HD

Fox 2.5 Performance Series IFP Smooth Body Front Shock - 1.5-3.5 in Lift | 2015-2019 GMC Sierra 3500HD

$346.95 USD
$346.95 USD
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In stock

The Fox 2.5 Performance Series Smooth Body IFP Front Shock fits the 2015-2019 GMC Sierra 3500HD and delivers race-developed damping for lifted HD trucks.

Install Difficulty: Professional Install Only
Front shock replacement on a heavy-duty truck requires a vehicle lift and suspension disassembly; typically takes 2-3 hours per side. Professional alignment recommended after any suspension modification.

Product Overview

This 2.5in aluminum-body monotube shock uses a true internal floating piston (IFP) to separate gas and oil for consistent, fade-resistant performance.

The race-developed main piston and vehicle-specific valving extend drop-out travel off-road while reducing sway on the highway.

Aluminum construction dissipates heat four times better than steel, and the shock is fully serviceable for a long service life on your Sierra 3500HD.

Features & Specifications

  • Fits: 2015-2019 GMC Sierra 3500HD
  • Provides 1.5-3.5" of front lift
  • Designed for trucks with 1.5in to 3.5in of front lift
  • Hydraulic Top Out (HTO) reduces harsh top-out for a smoother ride, especially on lifted trucks or aggressive tires
  • 2.5in aluminum smooth body monotube design
  • Internal floating piston separates gas and oil
  • Race-developed main piston with vehicle-specific valving
  • Aluminum body dissipates heat 4x better than steel
  • Fully serviceable and corrosion resistant

Fitment

This part fits the following vehicles:

Year Make Model Submodel
2015-2019 GMC Sierra 3500 HD Base
2015-2019 GMC Sierra 3500 HD Denali
2015-2019 GMC Sierra 3500 HD SLE
2015-2019 GMC Sierra 3500 HD SLT
⚠ Submodel Fitment: If your submodel is not listed in the fitment table above, we cannot confirm fitment. Please contact us before purchasing to verify.

Shipping & Returns

Tracking is typically provided within 3–5 business days; items shipping direct from the manufacturer may take 5–7. Some items are made to order or may be backordered. Questions about stock? Reach us through live chat or email.

Warranty

All warranties are through the manufacturer and are facilitated by Stateside Performance. Some manufacturers require the end user to contact them directly; in that case we will point you to the right contact. Email us with any warranty questions.

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  • Free shipping over $250

    Free shipping applies to items that are shipped via ground through UPS or FedEx and are over $250 going to the continental 48 states. This does not apply to Alaska or Hawaii, and does not apply to any item(s) that are shipped via freight or with any other option other than ground shipping.

    Shipping policy 

  • 30-day returns

    Returns must be requested within 30 days of delivery. Parts must be new, unused, uninstalled, and in original packaging, with an RMA. Some items are final sale.

    Return policy