Icon Vehicle Dynamics K53112 Secondary Shock System Lift 0-3.5" Lexus GX470/Toyota 4Runner/Tacoma/FJ Cruiser 03-15 Pair

ICON S2 Secondary Shock System

The ICON S2 Secondary Shock System upgrades ICON coilover-equipped Toyota Tacoma (2005–2015), Toyota 4Runner (2003–2009), and Toyota FJ Cruiser (2007–2009) vehicles by adding a secondary 2.5 Aluminum Series shock to significantly increase damping capability for demanding off-road use. The modular, mostly bolt-on design improves off-road performance and stability while maintaining OE track width and using the factory lower control arms.

The system features billet aluminum shock tower adapters, fabricated shock hoops, and steel skid plates with integrated shock mounts. It is designed to avoid major frame alterations, remain fully removable, and allow owners to install the skid plates standalone for added lower control arm protection.

• Improved damping: Drastically increases damping ability for rough terrain and larger obstacles.
• On-road stability: Enhances vehicle stability on pavement.
• Factory integration: Utilizes factory lower control arms and maintains OE track width.
• Vehicle-specific tuning: Secondary shocks are tuned for the application, offering increased damping and oil volume.
• Adjustable compression: CDC Valve technology enables quick, easy compression damping adjustment.
• Serviceable shocks: Shocks are fully rebuildable and revalveable.
• Durable construction: 2.5 Aluminum Series shocks use one-piece impact-extruded aluminum cylinders for corrosion resistance and a consistent finish.
• Modular installation: Mostly bolt-on design for straightforward installation and stepwise upgrades.

Notes

• OEM wheels and tires fitment: Yes.
• Recommended aftermarket wheels: ICON Alloys 17x8.5 with 4.75" backspace / 0mm offset; 18x9 with 5.00" backspace / 0mm offset; 20x9 with 5.00" backspace / 0mm offset.
• Recommended aftermarket tires: 33" x 11.50" (larger tires may fit but fender trimming and modifications will be required).
• These are stand-alone kits and are not to be used in conjunction with any other aftermarket kits.
• Shocks are fully serviceable. Coilover heights indicated are for a stock-equipped vehicle.
• Welding required — lower control arm.
• Does not work with TRD big brake kit.
• Not recommended with remote reservoir coilover.
• Maximum steering angle is reduced for secondary shock compatibility.
• Not compatible with KDSS-equipped GX470s.

Icon Vehicle Dynamics K53112 Secondary Shock System Lift 0-3.5" Lexus GX470/Toyota 4Runner/Tacoma/FJ Cruiser 03-15 Pair - Features