• King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 3500HD
  • King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 3500HD
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KIN25001-303A

King Shocks

King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 3500HD

King Shocks 2.5 Adjustable Piggyback Reservoir Rear Shocks - Pair | 2020-2025 GMC Sierra 3500HD

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

The King 2.5in Piggyback Reservoir Rear Shocks fit the 2020-2025 GMC Sierra 3500HD and deliver race-bred damping with on-the-fly compression adjustability.

Sold as a pair, custom-tuned for the Sierra HD platform.

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

Product Overview

King's OEM Performance Series rear shocks use a 2.5in diameter body with a piggyback reservoir to dissipate heat and resist fade under heavy loads and washboard roads.

The external compression adjuster lets you dial in damping for hauling, towing, or high-speed desert work without removing the shock.

Each kit is custom-tuned through real-world testing to deliver the optimal damping curve for the Sierra 3500HD chassis.

Features & Specifications

  • Fits: 2020-2025 GMC Sierra 3500HD
  • 2.5in diameter shock body
  • Piggyback remote reservoir for heat dissipation
  • External compression adjuster
  • Custom-tuned damping curve for Sierra HD
  • Sold as a rear pair
  • Bolts to factory rear shock mounts
  • Race-proven OEM Performance Series build

Fitment

This part fits the following vehicles:

Year Make Model Submodel
2020-2025 GMC Sierra 3500 HD AT4
2020-2021 GMC Sierra 3500 HD Base
2020-2025 GMC Sierra 3500 HD Denali
2024-2025 GMC Sierra 3500 HD Denali Ultimate
2022-2025 GMC Sierra 3500 HD Pro
2020-2025 GMC Sierra 3500 HD SLE
2020-2025 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

Products that are in stock ship within 1-3 business days of being ordered. Please note some items are made to order, or could be out of stock. If you have any questions regarding stock please contact us through the live chat or email and we would be happy to help

Warranty Info

All warranties are through the manufacturer, they will be facilitated by State Side Performance (some manufacturers require the end user contact the manufacturer directly to facilitate the warranty, in that case we will recommend you contact the manufacturer. Please contact us by Email if you have any questions or concerns regarding a warranty claim.

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  • Free Shipping for Non Oversize Items of $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.

    More info on shipping policy 

  • Return Policy

    Returns must be UNOPENED, UNUSED, HAVE ALL ORIGINAL PACKAGING, BE IN NEW CONDITION, HAVE A VALID RMA, BE WITHIN A 30 DAY RETURN WINDOW FROM THE DATE OF PURCHASE.

    More info on refund and return policy