ICON S2 Stage 3 Secondary Shock System K53123 for 2010-2024 Toyota 4Runner and 2010-2014 FJ Cruiser

The ICON Vehicle Dynamics S2 Secondary Shock System redefines the off-road capability of the 2010-2024 Toyota 4Runner and 2010-2014 Toyota FJ Cruiser by allowing for the installation of a secondary shock to an existing ICON coilover setup. The addition of secondary 2.5 Aluminum Series remote reservoir Omega bypass shocks means rougher terrain and larger off-road obstacles can be overcome with confidence as the damping ability of the vehicle’s suspension is effectively doubled. The ICON Omega Bypass shocks feature two bypass tubes, creating multiple damping zones within the shocks, and externally adjustable bypass valves that restricts oil flow through the tubes to provide 28 settings of compression and rebound adjustment, with no tools required. As opposed to overly complicated and expensive long travel kits, the ICON S2 System is an affordable upgrade that drastically increases off-road performance, is easy to install, and has a modular design that allows 4Runner/FJ Cruiser owners to upgrade in steps or all at once. 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
• Omega Series two-tube bypass allows for compression and rebound damping adjustment
• 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

The ICON Vehicle Dynamics S2 Stage 3 Secondary Shock System, Part Number K53123, is designed for the 2010-2024 Toyota 4Runner and 2010-2014 Toyota FJ Cruiser equipped with an ICON coilover setup. By adding secondary 2.5-inch Aluminum Series remote reservoir Omega bypass shocks, this system effectively doubles the vehicle’s damping capability for improved control over rough terrain, large obstacles, and demanding off-road conditions. It provides a substantial performance upgrade without requiring a complicated long-travel suspension kit.
The Omega bypass shocks use a two-tube bypass design with multiple internal damping zones and externally adjustable bypass valves. Drivers can make tool-free compression and rebound adjustments across 28 settings to fine-tune suspension response for changing terrain and driving conditions. Vehicle-specific tuning increases damping control and oil volume, while the remote reservoirs help support consistent performance during extended off-road use. The shocks are fully rebuildable and revalveable for long-term serviceability and customization.
The ICON S2 system features a mostly bolt-on installation and uses the factory lower control arms while maintaining original-equipment track width. Its modular design allows 4Runner and FJ Cruiser owners to install the upgrade in stages or complete the system at once. In addition to improved off-road damping and stability, the system enhances on-road vehicle control. Application Note #35: Remote reservoir mounting brackets may interfere with aftermarket bumper mounts or windshield washer bottles. Professional installation is recommended, and vehicle compatibility should be verified before ordering.

Features:

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

• Omega Series two-tube bypass design provides adjustable compression and rebound damping

• Externally adjustable bypass valves offer 28 tool-free damping settings

• Vehicle-specific tuning delivers increased damping control and oil volume

• Mostly bolt-on design supports a straightforward installation

• Effectively doubles suspension damping capability for improved off-road control

• Fully rebuildable and revalveable shocks support long-term service

• Improves vehicle stability during on-road and off-road driving

• Uses factory lower control arms

• Maintains original-equipment track width

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