• King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 2500HD - Stateside Performance - Shocks and Struts - King Shocks - King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 2500HD
  • King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 2500HD - Stateside Performance - Shocks and Struts - King Shocks - King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 2500HD
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KIN25001-303A

King Shocks

King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 2500HD

King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 2500HD

$1,439.25 USD
$1,439.25 USD
Sale Sold out
Shipping calculated at checkout.

The King Shocks 2.5in Piggyback Reservoir Rear Shocks fit the 2020-2025 GMC Sierra 2500HD and deliver OEM performance tuning custom-valved for HD trucks.

Sold as a pair with external compression adjusters for on-truck tuning.

Install Difficulty: Professional Install Only
Rear shock replacement bolts to factory shock mounts with hand tools and typically takes 60-90 minutes per side on a lift. Professional alignment recommended after any suspension modification.

Product Overview

This King OEM Performance Series rear shock pair uses a 2.5in diameter monotube body with piggyback remote reservoirs to separate oil and nitrogen, reducing fade under heavy load and washboard.

Each shock is custom-tuned for the Sierra 2500HD chassis to dial in damping for stock and lightly loaded conditions.

Compression adjusters let you fine-tune ride quality for hauling, towing, or unloaded daily driving without removing the shock.

Features & Specifications

  • Fits: 2020-2025 GMC Sierra 2500HD
  • 2.5in diameter monotube shock body
  • Piggyback remote reservoir design
  • External compression adjuster on each shock
  • Custom-tuned damping curve for HD chassis
  • Rebuildable and revalvable for long service life
  • Sold as a pair (rear)

Fitment

This part fits the following vehicles:

Year Make Model Submodel
2020-2025 GMC Sierra 2500 HD AT4
2024-2025 GMC Sierra 2500 HD AT4X
2020-2021 GMC Sierra 2500 HD Base
2020-2025 GMC Sierra 2500 HD Denali
2024-2025 GMC Sierra 2500 HD Denali Ultimate
2022-2025 GMC Sierra 2500 HD Pro
2020-2025 GMC Sierra 2500 HD SLE
2020-2025 GMC Sierra 2500 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