ICON Stage 6 Suspension System 2-3.5" Lift 20-26 GM 2500HD/3500HD L5P
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
Select your truck to continue
Ships directly from the supplier. The final shipping cost will be shown before payment.
- Ships from ICON Vehicle Dynamics
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.
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.
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 warrantyProduct 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
- Signature delivery required
- 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.