
Questions about fitment?
Talk to a TRU specialist
We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT
Important notes before you order
- APPLICATION NOTE #55: Shocks Are Fully Serviceable. Coilover Heights Indicated Are For A Stock Equipped Vehicle
- APPLICATION NOTE #65: Not Sold Separately, Only Sold In Complete Kit Form As Listed
- APPLICATION NOTE #113: 26.13" Is Max Measurement From Fender To Hub, Exceeding The Maximum Lift Height Of 26.13" Can Lead To Component Failure Not Covered By ICON Warranty
- TECH NOTE: The additional down travel provided by an ICON Suspension System can cause clearance issues between the sway bar and the stock splash guard as the suspension approaches full extension. ICON Vehicle Dynamics 2020-UP GM HD Splash Guard Kit, part number 77202 recommended.
TRU specialist notes
From the Trucks R Us fitment and install team, beyond the manufacturer's information.
- Plan for a professional wheel alignment after installing any lift or leveling kit.
- Going to bigger tires as well? Speedometer recalibration may be needed, and some tire and wheel combinations need trimming. Check the recommended wheels and tires, or ask us before you order.
Specifications
| Brand | ICON Vehicle Dynamics |
|---|---|
| Part number | K78351T |
| UPC / GTIN | 840103419374 |
| Front Lift Height | 0-2" |
| Active or Passive Suspension | Passive |
| Adjustable Compression | No |
| Adjustable Control Arm | No |
| Adjustable Damping | No |
| Adjustable Rebound | No |
| Bushing(s) Included | Yes |
| Front Reservoir Style | Internal |
| Front Shock Body Diameter | 2.5 IN |
| Grade Type | Performance |
| Maximum Lift | 2 IN |
| Maximum Lift Height Front | 2 IN |
| Minimum Lift Front | 0 IN |
| Mounting Hardware Included | Yes |
| Rear Reservoir Style | Internal |
| Rear Shock Body Diameter | 2 IN |
| Shocks Included | Yes |
| Country of Origin | US |
| Warranty | See Rep |
California Proposition 65 warning applies to this product. www.P65Warnings.ca.gov
What's in the box
| Qty | Part | Description |
|---|---|---|
| 1 | 78732T | 20-26 GM HD 0-2" IR SHOCK SYS W/ TUBE UCA |
| 2 | 76529 | 01-26 GM HD 0-1" REAR 2.0 VS IR |
Features
- 0-2” Adjustable lift height over stock
- Vehicle specific tuned 2.5" front and 2.0” rear shocks for superior shock damping and control
- Improved ride quality over stock with no change in towing capacity
- Wheel travel increase of 2" over stock
- 100% Bolt-on system - no drilling, cutting, or welding necessary for install
- 6061 Aircraft grade aluminum CNC machined components
- Corrosion resistant anodized aluminum shock bodies
Recommended wheels & tires
- OEM Wheels & Tires Fitment: Yes
- Recommended Aftermarket Wheels: ICON Alloys - 18x9 with 5.5” Backspace / 12mm Offset
- Recommended Aftermarket Wheels: ICON Alloys - 20x9 with 5.5” Backspace / 12mm Offset
- Recommended Aftermarket Tires: 35" x 12.50" (Larger tires may fit but fender trimming and modifications will be required.)
Installation
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
Tougher, stronger and more capable - That's the motto that General Motors used when debuting the all-new fleet of heavy-duty trucks in 2020. ICON Vehicle Dynamics stayed true to GM engineers' thought process with the development of our suspension systems for the 2020-2026 GM HD 2500/3500 trucks. Using ICON's holistic engineering philosophy, our R&D team went above and beyond to develop several stages of complete suspension systems that provide varying levels of adjustability, capability, and overall vehicle performance. ICON's Stage 1 system is comprised of V.S. 2.5 Aluminum Series internal reservoir front shocks, 2.0 Aluminum Series internal reservoir rear shocks, and tubular Delta Joint upper control arms. The ICON vehicle specific tuned 2.5" front shocks are the key to attaining optimum ride quality and getting that desired comfort with the 3/4 & 1-ton working capability. Additionally, ICON upper control arms improve alignmemt specs, add strength, durability, and when paired with extended travel shocks increases wheel travel 2" over the OEM configuration. While driving the construction site or trails to your favorite dirt bike location, ICON wants you to get there in comfort just like your drive to work.
This system features upper control arms with ICON's patented Delta Joint. The Delta Joint is a heavy-duty high angle ball joint that combines the durability of a ball joint with the performance characteristics of a traditional uniball. While the industry standard uniball does a great job of allowing the control arms of a vehicle to articulate with little bind, they do have an inherent weakness that leaves more to be desired when used in a daily driven application - exposure to the elements. The Delta Joint features a zinc plated housing providing the first layer of corrosion resistance, while a tough grease seal keeps potentially harmful elements out of the inner workings of the joint. Metal on metal construction and a greaseable design increase the longevity of the Delta Joint while at the same time allowing for noise-free operation. What makes the Delta Joint unique is that it brings the best of both worlds to ICON upper control arms with features that make it more robust than a uniball, and at the same time capable of greater angularity than a typical ball joint.
Questions
Will this fit my truck?
Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.
Do you help with installation?
Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.
What if the part has a problem?
We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.
Can I return it?
Most items can be returned within 30 days. See our return policy for details.
Do I need an alignment after installing?
Yes. Any lift or leveling kit changes suspension geometry, so get a professional alignment after installation.
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About ICON Vehicle Dynamics
ICON Vehicle Dynamics specializes in performance suspension components, shocks, and accessories for today’s most popular trucks & SUVs. Since 2008, ICON has been developing products that redefine the limits of what a “stock” vehicle is capable of. ICON is part... Shop all ICON Vehicle Dynamics