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ICON Vehicle DynamicsPart # 77703EP

ICON 2019-2026 Chevrolet Silverado 1500/GMC Sierra 1500, 0-2" Lift, Rear, V.S. 2.5 Aluminum Series Shock Absorbers, Piggyback Reservoir w/ CDEV, Pair

Regular price $1,899.95
Regular price B2B price $1,899.95
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  • 30-day returnsSee policy
  • Warranty supportWe work with the maker
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Questions about fitment?

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Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT

Important notes before you order

  1. APPLICATION NOTE #13: Compatible with 0-2" of rear lift on most models
  2. APPLICATION NOTE #15: Compatible with 0" of rear lift on Chevrolet Silverado 1500 Trail Boss and GMC Sierra 1500 AT4
  3. APPLICATION NOTE #198: An iOS operated device is required to run ICON Intelligent Control app
  4. APPLICATION NOTE #204: Also requires installation of applicable IIC kit and CDEV front shocks
  5. APPLICATION NOTE #327: Not compatible with Silverado 1500 ZR2 or Sierra 1500 AT4X submodels
  6. APPLICATION NOTE #331: Silverado 1500 and Sierra 1500 submodels equipped with Adaptive Ride Control also require part numbers 71021 and 71022
  7. APPLICATION NOTE #342: Silverado 1500 and Sierra 1500 submodels equipped with Adaptive Ride Control also require concurrent installation of aftermarket front coilovers

Specifications

BrandICON Vehicle Dynamics
Part number77703EP
UPC / GTIN840103437637
Active or Passive SuspensionActive
AdjustableYes
Adjustable CompressionYes
Adjustable DampingYes
Adjustable ReboundNo
Boot IncludedNO
Bore Diameter2.25 IN
Compressed Length15.55 IN
Cylinder ColorGray
Cylinder Diameter2.5 IN
Cylinder MaterialAluminum
Damping Adjustment TypeElectronic
Damping TypeOil
Extended Length24.88 IN
External ReservoirYes
Gas ChargedYes
Grade TypePerformance
Includes Bump StopNo
Lower Mount TypeEyelet
Mounting Hardware IncludedYes
Reservoir TypePiggyback
Shaft Diameter0.875 IN
Shaft MaterialChrome
Shock Absorber Body End Measuring PointCenter of Eylet
Shock Absorber Rod End Measuring PointCenter of Eylet
Stroke Length Rear9.33 IN
Tube Outside Diameter2.5 IN
Upper Mount TypeEyelet
Valving TypeDigressive
Country of OriginUS

California Proposition 65 warning applies to this product. www.P65Warnings.ca.gov

Features

  • ICON's CDE Valve technology allows for in vehicle adjustment of compression damping settings and active adjustment via the ICON Intelligent Control (IIC)
  • ICON’s internal “Bump Zone” increases damping by 20% to provide more control as the shock approaches full compression
  • Remote reservoir design improves heat dissipation to reduce shock fade during prolonged use
  • Premium grade 5WT shock oil for consistent suspension damping along a wide temperature range
  • Nitrogen charged monotube design with piggyback reservoir
  • One piece digressive piston design with vehicle specific valving for unsurpassed performance and ride quality on and off-road
  • 7/8” diameter induction hardened, chrome plated shock shaft
  • PTFE lined spherical bearings and application specific mounting hardware
  • 6061 aircraft grade aluminum CNC machined components
  • One-piece, hard anodized, impact extruded aluminum cylinders offer excellent corrosion resistance and consistent finish
  • 100% Rebuildable
  • 100% Revalveable

Overview

ICON Vehicle Specific (V.S.) 2.5 Series shocks are designed and built to give your vehicle outstanding performance off-road and a smooth ride on the street. These shocks are configured specifically for each application in both length and damping tune. Like all ICON shock absorbers, V.S. 2.5 Series shocks are 100% rebuildable and 100% revalveable. For piggyback and specific remote reservoir applications, ICON’s unique use of a 6061 billet aluminum manifold a few inches below the top cap of the shock creates an internal “Bump Zone” that when used creates an additional 20% of damping force. This additional force helps prevent harsh bottom outs and controls the suspension when compressing at high velocity. The ICON CDE Valve upgrade is included for those desiring an easy way to tune the ride electronically from inside the vehicle. Compression Damping Electronic Valve (CDEV) is an electronically controlled valve that meters the flow of oil to regulate the amount of damping force that is created by the shock when compressed. This infinitely variable valve can react in less than 40ms and has the ability to make extremely precise adjustments for varying terrain. CDEV’s hydraulic circuits are also custom tailored per application to create the highest resolution and dynamic range allowable for each specific vehicle. Powered by ICON Intelligent Control and proprietary ICON mobile app, the system uses information from the onboard G-force sensor and Gyroscope to perform calculations based on algorithms and user-defined settings to predict terrain and adjust shock settings via the CDEV accordingly.

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.

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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