The ICON Vehicle Dynamics 2.0 Aluminum Series Internal Reservoir (IR) Rear Shock Pair is a premium suspension upgrade for the 2001-2019 Chevrolet and GMC 2500HD / 3500HD 4WD. These shocks are custom-valved by ICON engineers to deliver a substantial improvement in ride quality and handling for both street and moderate off-road use. The aluminum body construction ensures superior heat dissipation and corrosion resistance compared to traditional steel shocks.

Features

• Application Specific Valving: Custom-tuned by ICON engineers for the 2001-2019 GM Heavy Duty platform to ensure optimal performance and comfort.
• Premium Construction: Features a 6063 anodized aluminum body that provides excellent heat dissipation and a high-tech appearance.
• Internal Reservoir Design: Utilizes a nitrogen-charged monotube architecture with an internal reservoir to prevent oil cavitation and damping fade.
• Durable Shafts: Equipped with 5/8-inch chrome-plated hardened steel shafts that resist pitting and corrosion from road debris.
• Serviceable Design: 100% rebuildable and revalveable, allowing the shocks to be maintained or custom-tuned for specific vehicle setups.
• High-Quality Bushings: Includes performance-grade polyurethane bushings and zinc-plated sleeves for a precise, quiet fit in factory locations.
• Noise-Free Operation: Features a nitrile rubber top-out bumper to ensure smooth and quiet suspension cycles.

Notes

• Specifically fits 2001-2019 Chevrolet Silverado 2500HD / 3500HD and GMC Sierra 2500HD / 3500HD 4WD models.
• Compatible with rear suspension heights ranging from stock to 1 inch of lift.
• Will work with both single rear wheel (SRW) and dual rear wheel (DRW) axle configurations.
• For trucks subjected to consistent extreme off-road use or heavy hauling, ICON recommends the larger-bore V.S. 2.5 Series shocks.