ICON Vehicle Dynamics S2 Shock Hoop Kit for Toyota FJ Cruiser, 4Runner and Tacoma

The ICON Vehicle Dynamics S2 Shock Hoop Kit adds a secondary shock mount to an existing ICON coilover setup on 2007–2014 Toyota FJ Cruisers, 2003–2024 Toyota 4Runners, and 2005–2023 Toyota Tacomas, using the factory lower control arm and maintaining OE track width. The kit includes a billet aluminum shock tower adapter, a fabricated secondary shock hoop, and a steel skidplate with an incorporated shock mount. Secondary shocks and an ICON LCA skid plate kit or ICON lower control arm kit are required separately to complete the system.

Shipping: ICON parts ship direct from ICON Vehicle Dynamics, mostly by UPS Ground. Lead times vary by part and some items are built to order, so please allow extra time. We email tracking as soon as your order ships.

Dual-Shock Capability Without Long-Travel Complexity

Adding a secondary shock to a coilover setup substantially increases damping capability in rough terrain without requiring frame welding, aftermarket lower control arms, or major alteration of any factory suspension component. The S2 kit achieves this by working with the factory lower control arm, so the structural modifications stay minimal and the OE track width is preserved. For drivers who want meaningfully better off-road damping but do not want the cost or fabrication commitment of a full long-travel conversion, the S2 hoop kit provides a direct path.

Modular Build-in-Stages Design

The S2 system is designed to be purchased and installed incrementally. The hoop kit can go on first; secondary shocks are added when ready. Three secondary shock types are compatible: ICON 2.5-inch Remote Reservoir Shocks, 2.5-inch Remote Reservoir CDC Valve Shocks, and 2.5-inch Two-Tube Bypass Shocks, allowing the damping character of the completed system to be tuned to the intended use. The modular approach means the vehicle stays driveable at each stage of the build rather than requiring a single all-at-once commitment.

Features

• No frame welding required: bolt-on installation does not alter the frame or other factory suspension components
• Factory bumpstops retained: the robust OE bumpstops remain in place
• OE track width maintained: uses the factory lower control arm, no widening
• Three compatible secondary shock options: ICON 2.5-inch Remote Reservoir, 2.5-inch Remote Reservoir CDC Valve, or 2.5-inch Two-Tube Bypass
• Lifetime warranty: covers fabricated and machined parts

Specifications

Who This Is For and Isn't

The S2 Shock Hoop Kit suits Toyota FJ Cruiser, 4Runner, and Tacoma owners who already run or plan to run an ICON coilover setup and want to add a secondary shock for improved off-road damping without committing to a long-travel conversion or frame modification.

This kit does not fit KDSS-equipped vehicles and will not fit a 2WD Tacoma with 5 wheel lug studs. It is a mounting hardware kit only; secondary shocks and an ICON LCA skid plate kit or ICON lower control arm kit are required separately, and the system is not functional without them. Buyers should also note that maximum steering angle is reduced once the secondary shock is installed.

Common Questions

Does this kit include the secondary shocks?

The S2 Shock Hoop Kit does not include secondary shocks. The kit provides the billet aluminum shock tower adapter, fabricated secondary shock hoop, and steel skidplate with shock mount. Compatible secondary shocks (ICON 2.5-inch Remote Reservoir, 2.5-inch Remote Reservoir CDC Valve, or 2.5-inch Two-Tube Bypass) are purchased separately to complete the system.

Does installation require welding or cutting the frame?

The S2 Shock Hoop Kit is a bolt-on system. Installation does not require welding to the frame or major alteration of any factory suspension component. The factory lower control arm and factory bumpstops remain in place.

Will this kit fit a KDSS-equipped 4Runner or FJ Cruiser?

The S2 Shock Hoop Kit does not fit vehicles equipped with KDSS (Kinetic Dynamic Suspension System). Buyers with KDSS-equipped 4Runners or FJ Cruisers should confirm compatibility with a suspension specialist before ordering.

Does fitting the secondary shock affect steering?

Yes. Installing the S2 secondary shock reduces maximum steering angle. This is a known characteristic of the system and should be factored into the build plan, particularly for vehicles used in tight technical terrain where full steering lock is regularly needed.

California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth anomalies, or other reproductive harm.