ICON Vehicle Dynamics K53121 - 10-24 4RUNNER/10-14 FJ S2 STAGE 1 UPGRADE SYSTEM
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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.
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 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. 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 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.
Features
- Drastically improves vehicle damping ability off-road
- Increased vehicle stability on-road
- Utilizes factory lower control arms
- Maintains OE track width
- Vehicle-specific tuned secondary shocks provide increased damping and oil volume
- 2.5 Aluminum Series secondary shocks feature one-piece impact extruded aluminum cylinders for excellent corrosion resistance and consistent finish
- Shocks are fully rebuildable and revalveable
- Mostly bolt-on design makes for straightforward install
Specifications
| AAP_UDA_12 | EA |
| AAP_UDA_22 | 1 |
| AAP_UDA_4 | 55 |
| Active or Passive Suspension | Passive |
| Add-On Part | 252008 - 2.5 X 13 SHOCK BOOT BLACK (PAIR) |
| Add-On Part | 252012 - -4 TO -10 HOSE SHIELD KIT |
| Adjustable Compression | No |
| Adjustable Rebound | No |
| Adjustable Ride Height | No |
| Adjustable Damping | No |
| Bushings Included | Yes |
| Shaft Diameter | 0.875 IN |
| Cylinder Diameter | 2.5 IN |
| Recommended Aftermarket Tires | 33" x 11.50" (Larger tires may fit but fender trimming and modifications will be required.) |
| Cylinder Material | Aluminum |
| Cylinder Finish | Anodized |
| Valving Type | Digressive |
| Lower Mount Type | Eyelet |
| Upper Mount Type | Eyelet |
| Cylinder Color | Grey |
| Dust Shield Included | No |
| Includes Bump Stop | No |
| Damping Type | Oil |
| Grade Type | Performance |
| Internal Construction Type | Single Tube |
| California Proposition 65 | WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. |
| Mounting Hardware Included | Yes |
| Remote Reservoir | Yes |
| California Prop 65 Warning | Yes |
| Gas Charged | Yes |
| OEM Wheels & Tires Fitment | Yes |
| Shock Mounts Included | Yes |
| Shocks Included | Yes |
| Shaft Material | Chrome |
| Recommended Aftermarket Wheels | ICON Alloys - 20x9" w/ 5” Backspace / 0mm Offset |
| Recommended Aftermarket Wheels | ICON Alloys - 18x9" w/ 5” Backspace / 0mm Offset |
| Recommended Aftermarket Wheels | ICON Alloys - 17x8.5" w/ 4.75” Backspace / 0mm Offset |
Note: OEM Wheels & Tires Fitment: Yes APPLICATION NOTE #84: Does not fit KDSS equipped vehicles APPLICATION NOTE #95: Does not work with TRD big brake kit APPLICATION NOTE #210: Maximum steering angle is reduced for secondary shock compatibility TECH NOTE: Compatible with 0-3.5" of front lift over stock Recommended Aftermarket Wheels: ICON Alloys - 17x8.5" w/ 4.75” Backspace / 0mm Offset Recommended Aftermarket Wheels: ICON Alloys - 18x9" w/ 5.00” Backspace / 0mm Offset Recommended Aftermarket Wheels: ICON Alloys - 20x9" w/ 5.00” Backspace / 0mm Offset Recommended Aftermarket Tires: 33" x 11.50" (Larger tires may fit but fender trimming and modifications will be required.) APPLICATION NOTE #17: THESE ARE STAND-ALONE KITS AND ARE NOT TO BE USED IN CONJUNCTION WITH ANY OTHER AFTERMARKET KITS APPLICATION NOTE #35: Remote reservoir mounting brackets may interfere with aftermarket bumper mounts / windshield washer bottles. APPLICATION NOTE #55: Shocks are fully serviceable. Coilover heights indicated are for a stock equipped vehicle APPLICATION NOTE #59: Welding required - lower shock tab and steering stop.
Short Description: S2 SHOCK SYSTEM
Invoice Description: K53121
Definition: Suspension Shock Absorber Kit
Installation Guide: Download PDF
Warranty: 1 Year-Shock Absorbers, Limited Lifetime-Shock Hoops, Skid Plates
Shipping Information
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Shipping: Free to the USA.
Orders are processed during normal business days. Delivery dates may vary by carrier and destination.
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