ICON K53121 S2 Stage 1 Secondary Shock System for 2010+ Toyota FJ Cruiser and 4Runner

The S2 Secondary Shock System utilizes the factory lower control arms and maintains OE track width while a combination of a billet aluminum shock tower adapters, fabricated shock hoops, and steel skid plates (with incorporated shock mounts) make for a straightforward install with the exceptional build quality you would expect from an ICON Vehicle Dynamics product. The system was designed to eliminate the need for any major alteration of the vehicle’s frame or any other factory suspension components, and the components are 100% removable in case the system is to be installed on another vehicle. The modular design of the S2 kit also allows for standalone installation of the skid plates, which provides the added benefit of protecting the factory lower control arms from potential trail damage that can be experienced while off-road. The ICON S2 Secondary Shock System redefines off-road capability by allowing the installation secondary shocks to an ICON coilover setup. Secondary shocks allow rougher terrain to be overcome as the damping ability is effectively doubled. APPLICATION NOTE #35: Remote reservoir mounting brackets may interfere with aftermarket bumper mounts / windshield washer bottles.

• 2.5 Aluminum Series secondary shocks feature one-piece impact extruded aluminum cylinders for excellent corrosion resistance and consistent finish
• Vehicle-specific tuned secondary shocks provide increased damping and oil volume
• Mostly bolt-on design makes for straightforward install
• Drastically improves vehicle damping ability off-road
• Shocks are fully rebuildable and revalveable
• Increased vehicle stability on-road
• Utilizes factory lower control arms
• Maintains OE track width

Upgrade the off-road performance of your 2010 and newer Toyota FJ Cruiser or 4Runner with the ICON K53121 S2 Stage 1 Secondary Shock System. Designed to work with an ICON coilover setup, this system adds secondary shocks to significantly increase damping capability, helping the vehicle handle rough terrain with improved control and composure. The system maintains original equipment track width and utilizes the factory lower control arms for a purposeful, vehicle-specific installation.
The ICON S2 system combines billet aluminum shock tower adapters, fabricated shock hoops, and durable steel skid plates with integrated shock mounts. Its mostly bolt-on design avoids major modifications to the vehicle frame or factory suspension components, while the modular components remain fully removable if the system is transferred to another vehicle. The skid plates can also be installed independently to help protect the factory lower control arms from trail damage during off-road use.
Included 2.5 Aluminum Series secondary shocks feature one-piece impact-extruded aluminum cylinders for corrosion resistance and a consistent finish. Vehicle-specific tuning provides increased damping and oil volume, while the fully rebuildable and revalveable construction supports long-term serviceability and customization. Additional benefits include improved vehicle stability on pavement and enhanced suspension performance off-road. Application note: Remote reservoir mounting brackets may interfere with certain aftermarket bumper mounts or windshield washer bottles. Professional installation is recommended, and compatibility should be verified with the vehicle and existing ICON suspension configuration.

Features:

• 2.5 Aluminum Series secondary shocks use one-piece impact-extruded aluminum cylinders for corrosion resistance and a consistent finish

• Vehicle-specific shock tuning delivers increased damping performance and oil volume

• Mostly bolt-on design supports a straightforward installation

• Secondary shocks increase damping capability for improved off-road control

• Fully rebuildable and revalveable shocks support long-term serviceability

• Improves vehicle stability during on-road driving

• Utilizes factory lower control arms

• Maintains original equipment track width

• Modular skid plates may be installed separately for added lower control arm protection

• Designed for 2010 and newer Toyota FJ Cruiser and 4Runner applications

Compatible With
2010 Toyota 4Runner
2010 Toyota FJ Cruiser
2011 Toyota 4Runner
2011 Toyota FJ Cruiser
2012 Toyota 4Runner
2012 Toyota FJ Cruiser
2013 Toyota 4Runner
2013 Toyota FJ Cruiser
2014 Toyota 4Runner
2014 Toyota FJ Cruiser
2015 Toyota 4Runner
2016 Toyota 4Runner
2017 Toyota 4Runner
2018 Toyota 4Runner
2019 Toyota 4Runner
2020 Toyota 4Runner
2021 Toyota 4Runner
2022 Toyota 4Runner
2023 Toyota 4Runner
2024 Toyota 4Runner