SKU #: ICON-K78366 MPN #: K78366

ICON Stage 6 Suspension System 2-3.5" Lift 20-26 GM 2500HD/3500HD L5P

$6,279.75

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Description

Want the absolute top-tier suspension setup ICON offers for your HD truck? The ICON Stage 6 Suspension System for GM heavy-duty trucks is built for drivers who want total control, maximum performance, and zero compromise. This is the full package: adjustable shocks on all four corners, combined with a complete rear leaf spring upgrade, completely transforming how your truck rides, handles, and performs in every condition. Factory suspension on these trucks is stiff, unpredictable, and underperforming, but this system fixes all of it in one shot. With CDCV-adjustable 2.5” remote reservoir shocks front and rear, you can fine-tune compression damping to match exactly how you use your truck. Soft for daily driving, firm for towing, or aggressive for high-speed off-road. The addition of full rear leaf packs eliminates the harsh, choppy factory ride and replaces it with a more controlled, progressive feel that stays comfortable unloaded but still supports weight when needed. The result is a truck that feels planted, responsive, and confidence-inspiring whether you're hauling, hitting rough terrain, or just driving it every day. Built around ICON’s highest-end suspension components, this system features 2.5” aluminum-bodied shocks with remote reservoirs and CDCV adjusters at all four corners, allowing on-the-fly tuning of compression damping. The remote reservoirs increase oil capacity and cooling efficiency, reducing fade and maintaining consistent performance under sustained heat, heavy loads, and aggressive driving. These shocks are fully rebuildable and revalveable, making them a long-term performance investment rather than a disposable upgrade. The billet aluminum upper control arms utilize ICON’s Delta Joint system, combining the strength of a ball joint with the articulation of a uniball while remaining sealed for long-term durability and reduced maintenance. The rear leaf packs are a full multi-leaf replacement designed to improve ride quality by softening initial spring rate while maintaining load support, giving you better compliance, traction, and overall balance. The entire system is engineered as a complete bolt-on solution using high-quality materials and corrosion-resistant finishes, delivering maximum durability and performance for everything from daily driving and towing to high-speed off-road abuse.

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Want the absolute top-tier suspension setup ICON offers for your HD truck? The ICON Stage 6 Suspension System for GM heavy-duty trucks is built for drivers who want total control, maximum performance, and zero compromise. This is the full package: adjustable shocks on all four corners, combined with a complete rear leaf spring upgrade, completely transforming how your truck rides, handles, and performs in every condition. Factory suspension on these trucks is stiff, unpredictable, and underperforming, but this system fixes all of it in one shot.

With CDCV-adjustable 2.5” remote reservoir shocks front and rear, you can fine-tune compression damping to match exactly how you use your truck. Soft for daily driving, firm for towing, or aggressive for high-speed off-road. The addition of full rear leaf packs eliminates the harsh, choppy factory ride and replaces it with a more controlled, progressive feel that stays comfortable unloaded but still supports weight when needed. The result is a truck that feels planted, responsive, and confidence-inspiring whether you're hauling, hitting rough terrain, or just driving it every day.

Built around ICON’s highest-end suspension components, this system features 2.5” aluminum-bodied shocks with remote reservoirs and CDCV adjusters at all four corners, allowing on-the-fly tuning of compression damping. The remote reservoirs increase oil capacity and cooling efficiency, reducing fade and maintaining consistent performance under sustained heat, heavy loads, and aggressive driving. These shocks are fully rebuildable and revalveable, making them a long-term performance investment rather than a disposable upgrade.

The billet aluminum upper control arms utilize ICON’s Delta Joint system, combining the strength of a ball joint with the articulation of a uniball while remaining sealed for long-term durability and reduced maintenance. The rear leaf packs are a full multi-leaf replacement designed to improve ride quality by softening initial spring rate while maintaining load support, giving you better compliance, traction, and overall balance. The entire system is engineered as a complete bolt-on solution using high-quality materials and corrosion-resistant finishes, delivering maximum durability and performance for everything from daily driving and towing to high-speed off-road abuse.

Vehicle Fitment

2020-2026 GM 2500HD/3500HD

WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov

About ICON Vehicle Dynamics

ICON Vehicle Dynamics is a premiere performance suspension manufacturer specializing in aftermarket suspension components for trucks, SUVs and off road suspension development. The companys business is customer-driven, technology-influenced, engineering-oriented and focuses on world-class manufacturing processes and techniques. Led by head engineer and SCORE champion driver Dylan Evans, ICON Vehicle Dynamics has the unique qualities to design and build the highest quality suspension components and test them in both real world applications as well as race conditions.

ICON is often asked how they develop such revolutionary performance suspension systems. The answer might surprise you. Their engineers actually start by determining a desired outcome of the vehicle they are working on. By studying forces and their effect on the vehicle in motion (Vehicle Dynamics) they are able to determine what improvements can be made. They determine how they can improve drivability of the vehicle, how to improve the handling characteristics and what changes can be made to improve the vehicle in real world situations. The end result of all this study is the highest quality and performing suspension products in the world. What also sets ICON products apart is our incredible commitment of time and energy dedicated to both ride development and testing. From vehicle dynamic theory to our years of experience and involvement in off road racing, rock crawling and just about anything you can do with a vehicle on or off the road. ICON engineers are in control and the driving force of the entire product line and manufacturing processes. This is made possible because all of their laser cutting, metal forming, CNC machining, welding and assembly is done in house.