Sulastic Rear Shackle Kit, 2500HD Duramax | 2011-2025

Sulastic Rear Shackle Kit, 2500HD Duramax | 2011-2025

The Sulastic SA-06 replaces the factory rear leaf-spring shackles on 2011-2025 Chevrolet Silverado and GMC Sierra 2500HD trucks. Each shackle has a central pivot with rubber elements on both sides that absorb road vibration and impacts before they reach the frame and cab. The result is a smoother ride and less bed bounce, with no change to ride height or load capacity.

Key Features

• Sulastic part number SA-06
• Pivoting shackle with rubber cushioning elements
• Sold as a pair: one shackle for each rear leaf spring
• Keeps ride height within 1/4 in of stock
• Load and towing capacity unchanged
• Maintenance-free
• Bolt-on installation, about 1-2 hours
• 2-year warranty

Benefits

A stock shackle passes every expansion joint and pothole straight into the frame, which is why an empty 2500HD bed bounces and rides harsh. The Sulastic shackle cushions those hits at the spring hanger. Sulastic rates it at a 60-80% reduction in vibration and shock, with better stability and shorter stopping distances. Because payload and towing ratings don't change, it suits trucks that tow heavy but spend most of their miles empty.

Fitment

Fits 2011-2025 Chevrolet Silverado and GMC Sierra 2500HD with the LML or L5P Duramax. For 3500HD trucks, use the Sulastic Shackle Kit 3500HD | 2011 - 2020. For 2001-2010 trucks, use the Sulastic Shackle Kit SA-04HD | 2001 - 2010.

What's Included

• (2) Sulastic rear shackles