• Fox 2.5 Performance Series Remote Reservoir Shock Absorber | 2020-2026 GMC Sierra 3500HD - Stateside Performance - Shocks and Struts - FOX - Fox 2.5 Performance Series Remote Reservoir Shock Absorber | 2020-2026 GMC Sierra 3500HD
  • Fox 2.5 Performance Series Remote Reservoir Shock Absorber | 2020-2026 GMC Sierra 3500HD - Stateside Performance - Shocks and Struts - FOX - Fox 2.5 Performance Series Remote Reservoir Shock Absorber | 2020-2026 GMC Sierra 3500HD
  • Fox 2.5 Performance Series Remote Reservoir Shock Absorber | 2020-2026 GMC Sierra 3500HD - Stateside Performance - Shocks and Struts - FOX - Fox 2.5 Performance Series Remote Reservoir Shock Absorber | 2020-2026 GMC Sierra 3500HD
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FOX987-24-025

FOX

Fox 2.5 Performance Series Remote Reservoir Shock Absorber | 2020-2026 GMC Sierra 3500HD

Fox 2.5 Performance Series Remote Reservoir Shock Absorber | 2020-2026 GMC Sierra 3500HD

$346.95 USD
$346.95 USD
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Shipping calculated at checkout.

In stock

 

The Fox 2.5 Performance Series Shock fits the 2020-2026 GMC Sierra 3500HD and delivers extended drop-out travel with vehicle-specific valving for on-road comfort and off-road control.

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Install Difficulty: Professional Install Only
Bolts to factory shock mounts with hand tools; typically installs in 60-90 minutes per axle on a vehicle lift. Professional alignment recommended after any suspension modification.

Product Overview

This is a race-developed monotube shock built on a 2.5in aluminum body with an internal floating piston (IFP) that keeps gas and oil separated for fade-resistant damping.

Fox tunes the valving specifically for the Sierra 3500HD, reducing body sway on-road while extending droop travel off-road.

The aluminum construction dissipates heat four times better than steel, and every shock is fully serviceable and corrosion-resistant.

Features & Specifications

  • Fits: 2020-2026 GMC Sierra 3500HD
  • Provides 6.5" of rear lift
  • Designed for a 6.5-inch rear lift
  • 2.5in aluminum monotube body
  • Internal floating piston separates gas and oil
  • Race-developed main piston with vehicle-specific valving
  • Extended drop-out travel for off-road articulation
  • Aluminum body dissipates heat 4x better than steel
  • Fully serviceable and rebuildable
  • Corrosion-resistant for harsh environments

Fitment

This part fits the following vehicles:

Year Make Model Submodel
2020-2026 GMC Sierra 3500 HD AT4
2020-2021 GMC Sierra 3500 HD Base
2020-2026 GMC Sierra 3500 HD Denali
2024-2026 GMC Sierra 3500 HD Denali Ultimate
2022-2026 GMC Sierra 3500 HD Pro
2020-2026 GMC Sierra 3500 HD SLE
2020-2026 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