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Shop / Suspension & Steering / ICON Stage 3 Suspension System 2-3.5" Lift 20-26 GM 2500HD/3500HD L5P
ICON Stage 3 Suspension System 2-3.5" Lift 20-26 GM 2500HD/3500HD L5P
ICON Stage 3 Suspension System 2-3.5" Lift 20-26 GM 2500HD/3500HD L5P photo 1
ICON Stage 3 Suspension System 2-3.5" Lift 20-26 GM 2500HD/3500HD L5P photo 2
ICON Vehicle Dynamics

ICON Stage 3 Suspension System 2-3.5" Lift 20-26 GM 2500HD/3500HD L5P

MPN: K78363
Show TruckDaily DriverTow Pig
$3,939.80
Ships From Supplier · Ships in 3–7 business days
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Are you looking to get full control over how your HD truck rides, handles, and performs in every condition? The ICON Stage 3 Suspension System for GM trucks is where things step into true high-performance territory. This system takes everything from Stage 2 and adds adjustable compression tuning, letting you fine-tune ride quality and performance based on how you actually use your truck. Whether you’re daily driving, towing heavy loads, or pushing speed off-road, this setup lets you dial in the suspension instead of settling for a one-size-fits-all feel.

With ICON’s 2.5” remote reservoir shocks featuring CDCV (Compression Damping Control Valve), you get the ability to adjust how firm or soft the suspension reacts to impacts. That means you can run a smoother setup for daily driving or stiffen things up for aggressive off-road use and heavy loads. Combined with increased wheel travel and improved suspension geometry from the billet upper control arms, this system delivers a planted, controlled feel at speed while maintaining comfort on-road. It’s a major step up for anyone who wants both performance and tunability, rather than just a basic lift.

Built around ICON’s premium 2.5” aluminum-bodied remote reservoir shocks, this system is designed for consistent performance under heat, load, and extended use. The remote reservoirs increase oil capacity, reducing fa. At the same time, the CDCV adjusters allow multiple levels of compression tuning so that you can match the suspension to your driving style or terrain. The shocks are specifically tuned for heavy-duty GM platforms, delivering controlled damping that improves stability without sacrificing ride quality.

The billet aluminum upper control arms feature ICON’s Delta Joint system, combining the strength of a traditional ball joint with the articulation of an uniball while remaining sealed against dirt, moisture, and corrosion. This improves durability for daily driving while allowing increased suspension travel and alignment correction. The entire system is engineered as a 100% bolt-on package, using high-quality materials and corrosion-resistant finishes, delivering long-term reliability for everything from towing and job-site use to high-speed off-road driving.

Warranty
Warranty based on supplier terms

Diesel Power Products directs warranty claims to the respective manufacturer; coverage and duration depend on that manufacturer and product. Its one-year manufacturer-defect warranty applies only to products manufactured by Power Products Unlimited Inc., not all products it sells. Manufacturer inspection is required; DPP does not pay inspection/return shipping or labor.

Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.

Diesel Power Products warranty policyView complete warranty

Product conditions

Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.

Professional installation is recommended.

Return eligibility
Diesel Power Products states a 30-day window from receipt for eligible new, uninstalled, unopened and complete items in original packaging, with prior approval/RMA. Custom tuners and specified opened tools are excluded. Customer pays return shipping; original outbound shipping, including initially free shipping, is deducted. No standard restocking percentage is stated for ordinary approved returns. Based on what Diesel Power Products offers.
Return window
Not stated for this product; see supplier terms
Restocking fee
See supplier terms; no product-specific fee stated
Return shipping
Based on the supplier’s return policy; see terms
Made to order
No
Backorder status
Not backordered
Cancellation
Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
Warranty provider
Diesel Power Products
Warranty duration
Product-specific duration not stated; see supplier terms
Compatibility
Listed for specific vehicle configurations
Legal use
Street legal
Processing estimate
3–7 business days supplier processing
Shipping
Shipping calculated at checkout
Signature
No signature requirement
Supplier
Diesel Power Products

Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.