Cognito 110-91256 Front Shock Extenders for 2024-2025 GM 2500HD ZR2/AT4X

Vehicle Fitment

• 2024-2025 Chevrolet Silverado 2500HD ZR2 (4WD, 6.6L V8 Gas / 6.6L Duramax Diesel)
• 2024-2025 GMC Sierra 2500HD AT4X (4WD, 6.6L V8 Gas / 6.6L Duramax Diesel)

Fitment Notes

• Requires factory Multimatic DSSV front shocks (ZR2 / AT4X models only)
• Designed for use with stock or compatible suspension systems
• Not compatible with non-DSSV shock-equipped trims
• Do not stack with other shock spacers or extenders

Features

• Increases front suspension droop travel by approximately 50%
• Expands droop travel from ~2 inches to just over 3 inches
• Improves ride quality over dips, bumps, and uneven terrain
• Reduces harsh top-out sensation from factory suspension
• Precision-machined billet aluminum construction
• Blue anodized finish to match Multimatic DSSV shocks
• Maintains proper shock geometry and alignment
• Simple bolt-on installation with minimal modification

Specifications

• Part Number: 110-91256
• Application: Front Shock Extender / Spacer Kit
• Material: Billet Aluminum (spacers)
• Finish: Blue Anodized
• Position: Front Suspension
• Droop Travel Increase: ~2" to 3"+
• Install Time: 1 hour
• Fitment Type: Vehicle-specific (ZR2 / AT4X DSSV suspension)

Included Components

• 2x Front Shock Spacers
• 4x M12 Lock Nuts
• 4x M12 Flat Washers

Product Description

The Cognito 110-91256 Front Shock Extender Kit is engineered to enhance front suspension performance on 2024-2025 Chevrolet Silverado 2500HD ZR2 and GMC Sierra 2500HD AT4X models equipped with factory Multimatic DSSV shocks. From the factory, these trucks are limited to approximately 2 inches of droop travel, which can lead to a harsh ride when encountering dips or uneven terrain. This kit increases droop travel to just over 3 inches, delivering a noticeable improvement in suspension compliance and ride comfort.

Manufactured from precision-machined billet aluminum and finished with a durable blue anodized coating, these spacers are built for strength, corrosion resistance, and long-term reliability. Designed as a direct bolt-on upgrade, the kit installs easily and maintains proper suspension geometry without compromising factory performance. Ideal for off-road enthusiasts and leveled or modified trucks, this upgrade helps maximize the capability of the DSSV suspension system while reducing wear and harshness.