ICON S2 Secondary Shock System – Stage 3 for 2010-2024 Toyota 4Runner

ICON Stage 3 S2 Secondary Shock Upgrade System (2010–2024 Toyota 4Runner / 2010–2014 FJ Cruiser)

Part Number: K53123

Summary: 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. This Stage 3 system features 2.5 Aluminum Series Omega Bypass remote reservoir shocks, effectively doubling the vehicle’s damping ability to conquer aggressive terrain. A key differentiator is the Omega Bypass technology, providing 28 settings of compression and rebound adjustment without the need for tools.

Features

• Omega Series Bypass: Two-tube bypass design provides 28 settings of external compression and rebound adjustment to ensure precise damping control for any terrain.
• Secondary Damping: Vehicle-specific tuned 2.5 Aluminum Series shocks provide increased oil volume to ensure consistent performance and fade resistance during high-speed off-road use.
• System Durability: One-piece impact extruded aluminum cylinders provide excellent corrosion resistance to ensure a long-lasting, consistent finish.
• Installation: Mostly bolt-on design with required welding for lower shock tabs provides a secure fitment to ensure maximum structural integrity.
• Chassis Integrity: Maintenance of OE track width and use of factory lower control arms provides a cost-effective performance increase to ensure straightforward integration with existing components.

Technical Specifications

Wheel & Tire Fitment

• OEM Wheels & Tires: Yes
• Aftermarket Wheels: 17×8.5 inches w/ 4.75” BS / 0mm Offset, 18×9 inches w/ 5.00” BS / 0mm Offset, or 20×9 inches w/ 5.00” BS / 0mm Offset
• Aftermarket Tires: 33 inches x 11.50 inches
• Note: Larger tires may fit but fender trimming and modifications will be required. Maximum steering angle is reduced for secondary shock compatibility. Does not fit KDSS equipped vehicles or TRD big brake kits. Welding required for lower shock tab and steering stop.

System Components

• 56106 (qty: 1): 10-14 FJ/10-24 4RUNNER LCA SKID PLATE KIT
• 56102 (qty: 1): 07-14 FJ/03-24 4RUNNER/05-23 TACOMA S2 SHOCK HOOP KIT
• 59906P (qty: 1): S2 FRONT 2.5 OMEGA RR PAIR

Why Choose ICON Stage 3?

• Performance Engineering: Effectively doubles the damping capacity of the front suspension for superior high-speed control.
• Modular Versatility: Designed as an affordable upgrade path for owners already running ICON 2.5 coilovers.
• Fully Serviceable: Shocks are rebuildable and revalveable for long-term performance and custom tuning.

Frequently Asked Questions

Is welding required for this installation?
Yes, welding is required for the installation of the lower shock tabs and steering stops to ensure the system is properly secured.

Can I use this with my factory wheels?
Yes, this system is compatible with OEM wheels and tires, though specific aftermarket dimensions are recommended for optimal performance.