ICON Stage 2 Suspension System with Billet UCA – 2003-2009 4Runner & 2007-2009 FJ Cruiser | K53052

Take your Toyota's suspension performance to the next level with the ICON Vehicle Dynamics Stage 2 Suspension System with Billet Upper Control Arms, part #K53052.

Designed specifically for the 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser, the ICON Stage 2 system combines Extended Travel 2.5 Series front coilovers, billet aluminum upper control arms with Delta Joint, 2-inch rear lift coil springs, and matched 2.0 Aluminum Series rear shocks.

Compared with ICON's Stage 1 system, Stage 2 adds Extended Travel front coilovers and ICON billet upper control arms, providing increased front droop travel, improved suspension articulation and corrected suspension geometry for lifted applications.

The front coilovers provide 0-3.5 inches of adjustable lift, allowing you to dial in your desired ride height while improving wheel travel, damping control and overall vehicle performance both on and off road.

Vehicle Fitment

Toyota 4Runner

• 2003

• 2004

• 2005

• 2006

• 2007

• 2008

• 2009

Toyota FJ Cruiser

• 2007

• 2008

• 2009

IMPORTANT: ICON lists the complete K53052 Stage 2 system specifically for 2003-2009 4Runner and 2007-2009 FJ Cruiser applications.

Individual components included in the system may fit additional Toyota and Lexus applications, but that does not extend the fitment of the complete K53052 suspension system.

Features

• Complete ICON Stage 2 Suspension System

• Fits 2003-2009 Toyota 4Runner

• Fits 2007-2009 Toyota FJ Cruiser

• Adjustable 0-3.5" front lift

• Extended Travel 2.5 Series front coilovers

• Increased front droop and wheel travel

• ICON billet aluminum upper control arms

• ICON patented Delta Joint

• 2" rear lift coil springs

• 2.0 Aluminum Series internal reservoir rear shocks

• Vehicle-specific front and rear shock tuning

• Improved on-road and off-road ride quality

• Increased suspension articulation

• Improved damping and vehicle control

• Helps maintain proper alignment at increased ride heights

• 6061 aircraft-grade aluminum CNC-machined components

• Corrosion-resistant CAD-plated coilover shock bodies

• Heavy-duty 7/8" front shock shafts

• Heavy-duty 5/8" rear shock shafts

• FK Rod End bearings for longevity and minimal deflection

• Fully serviceable shocks

• Bolt-on installation

• No cutting or welding required

• ICON Vehicle Dynamics part number K53052

What Makes Stage 2 Different From Stage 1?

The ICON Stage 2 system builds on the Stage 1 suspension package with two important front suspension upgrades:

• Extended Travel 2.5 Series front coilovers

• ICON Billet Aluminum Upper Control Arms with Delta Joint

The Extended Travel coilovers provide additional front suspension droop and wheel travel compared with ICON's standard-travel Stage 1 coilovers.

Because the Extended Travel coilovers allow the front suspension to articulate farther, ICON requires its upper control arms as part of the system.

The result is a more capable front suspension with increased articulation while maintaining suspension geometry appropriate for a lifted vehicle.

Adjustable 0-3.5" Front Lift

The ICON 2.5 Series Extended Travel front coilovers provide 0 to 3.5 inches of adjustable front lift on a stock-equipped vehicle.

This allows you to adjust the front ride height based on your desired stance, tire size and vehicle configuration.

Unlike a basic spacer lift, the ICON system replaces the factory front shock and spring assembly with a performance coilover designed to improve:

• Ride quality

• Shock damping

• Suspension travel

• Vehicle control

• Off-road performance

• Front ride height

Front Lift Range: 0-3.5"

ICON notes that published coilover lift heights are based on a stock-equipped vehicle. Added weight from aftermarket bumpers, winches, skid plates and other accessories can affect actual ride height.

Extended Travel 2.5 Series Front Coilovers

Stage 2 upgrades the front suspension with ICON's Extended Travel 2.5 Series Vehicle-Specific Internal Reservoir Coilovers.

Compared with the standard-travel coilovers included with Stage 1, these shocks provide additional suspension travel and front droop.

Key features include:

• 2.5-inch shock body

• Extended Travel design

• Vehicle-specific shock tuning

• Adjustable 0-3.5" ride height

• Increased front droop travel

• Corrosion-resistant CAD-plated shock body

• Heavy-duty 7/8-inch shock shaft

• 6061 aircraft-grade aluminum CNC-machined components

• FK Rod End bearings

• Fully serviceable construction

The larger shock body and vehicle-specific tuning provide excellent damping and heat management for both street and off-road driving.

ICON Billet Upper Control Arms

The K53052 Stage 2 system includes ICON's premium billet aluminum upper control arms.

These control arms are designed to work with the Extended Travel coilovers and provide the additional articulation and suspension geometry needed when increasing front suspension travel and ride height.

The billet UCAs are CNC machined from 6061 aluminum for an excellent combination of strength, precision and appearance.

They also incorporate ICON's Delta Joint at the outer mounting point.

ICON Delta Joint

ICON's patented Delta Joint combines characteristics of a traditional ball joint with the increased angularity normally associated with a uniball.

Unlike an exposed traditional uniball, the Delta Joint uses a protective design intended to improve durability in daily-driven and off-road environments.

Key Delta Joint features include:

• Heavy-duty high-angle joint design

• Increased angularity compared with a conventional ball joint

• Metal-on-metal construction

• Greaseable design

• Zinc-plated housing for corrosion resistance

• Protective grease seal

• Helps keep dirt, water and other contaminants away from internal components

• Designed for quiet operation

• Excellent for daily-driven and off-road vehicles

This makes the Delta Joint particularly attractive for vehicles that need increased suspension articulation without sacrificing the durability and low-maintenance characteristics desirable for everyday use.

2" Rear Lift Coil Springs

The K53052 system includes a pair of ICON 2-inch rear lift coil springs.

These springs complement the adjustable front suspension while providing increased rear ride height and improved suspension performance.

The result is a balanced suspension package designed to improve both the stance and performance of the 4Runner or FJ Cruiser.

2.0 Aluminum Series Rear Shocks

ICON pairs the Extended Travel front suspension with 2.0 Aluminum Series Vehicle-Specific Internal Reservoir rear shocks.

Rear shock features include:

• 2.0-inch aluminum shock body

• Internal reservoir design

• Vehicle-specific tuning

• Heavy-duty 5/8-inch shock shaft

• Designed for 1-3 inches of rear lift

• Fully serviceable construction

The rear shocks are specifically tuned to complement the front coilovers, helping provide balanced damping and vehicle control from front to rear.

System Components

The ICON K53052 Stage 2 Suspension System includes:

Front Extended Travel Coilovers

• ICON 58645

• Quantity: 1 pair

• 2.5 Series Vehicle-Specific Internal Reservoir

• Extended Travel

• Adjustable 0-3.5" front lift

Billet Upper Control Arms

• ICON 58551DJ

• Quantity: 1 kit

• CNC-machined billet aluminum

• ICON Delta Joint

Rear Coil Springs

• ICON 52700

• Quantity: 1 pair

• 2" rear lift coil springs

Rear Shocks

• ICON 56505

• Quantity: 2

• 2.0 Aluminum Series Vehicle-Specific Internal Reservoir shocks

• Designed for 1-3" rear lift applications

Wheel & Tire Recommendations

ICON confirms that OEM wheels and tires are compatible with the K53052 suspension system.

For aftermarket wheel and tire combinations, ICON recommends:

17" Wheels

• 17x8.5"

• 4.75" backspacing

• 0mm offset

18" Wheels

• 18x9"

• 5.00" backspacing

• 0mm offset

20" Wheels

• 20x9"

• 5.00" backspacing

• 0mm offset

Recommended Aftermarket Tire Size:
33" x 11.50"

Larger tires may fit, but ICON notes that fender trimming and other modifications may be required.

Actual tire clearance can vary depending on wheel width, offset, backspacing, suspension height and vehicle configuration.

Expedition Coil Option for Heavier Vehicles

ICON identifies an optional 700 lb/in Expedition Coil for heavier-equipped vehicles.

This can be useful for 4Runners and FJ Cruisers carrying substantial additional front-end weight from accessories such as:

• Steel bumpers

• Winches

• Skid plates

• Recovery equipment

• Other permanently installed accessories

Spring selection should be based on the vehicle's actual configuration and additional weight.

Fully Serviceable ICON Shocks

The ICON shocks included with the K53052 system are fully serviceable.

Unlike disposable replacement shocks, ICON shocks can be serviced and rebuilt as components wear over time, helping extend the usable life of the suspension system.

Bolt-On Installation

The ICON Stage 2 Suspension System is designed as a bolt-on suspension upgrade.

No cutting or welding is required.

A professional wheel alignment should be performed after installation and final ride-height adjustment.

Product Specifications

Manufacturer: ICON Vehicle Dynamics
Part Number: K53052
Product: Stage 2 Suspension System
Toyota 4Runner Fitment: 2003-2009
Toyota FJ Cruiser Fitment: 2007-2009
Front Shock Series: ICON 2.5 Series Extended Travel
Front Lift Range: 0-3.5"
Upper Control Arms: ICON Billet Aluminum
UCA Joint: ICON Delta Joint
Rear Shock Series: ICON 2.0 Aluminum Series Internal Reservoir
Rear Shock Lift Range: 1-3"
Rear Coil Spring Lift: 2"
Front Shock Shaft: 7/8"
Rear Shock Shaft: 5/8"
Front Coilover Component: 58645
Upper Control Arm Component: 58551DJ
Rear Coil Spring Component: 52700
Rear Shock Component: 56505
OEM Wheel & Tire Compatible: Yes
Recommended Tire Size: 33" x 11.50"
Installation: Bolt-On
Cutting Required: No
Welding Required: No
Shocks Serviceable: Yes
UPC: 840103416809

Frequently Asked Questions

What vehicles does ICON K53052 fit?
ICON lists K53052 for the 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser.

How much lift does ICON K53052 provide?
The front ICON coilovers are adjustable from 0-3.5 inches of lift, while the included rear coil springs provide approximately 2 inches of rear lift.

What is the difference between ICON K53051 Stage 1 and K53052 Stage 2?
Stage 2 upgrades the front suspension with Extended Travel 2.5 Series coilovers and ICON billet upper control arms with Delta Joint. These components provide increased front droop travel and suspension articulation compared with Stage 1.

Why does Stage 2 include upper control arms?
The Extended Travel coilovers provide additional suspension travel. ICON specifies its upper control arms to accommodate the increased travel and provide appropriate suspension geometry and articulation.

What type of upper control arms are included?
K53052 includes ICON CNC-machined billet aluminum upper control arms with Delta Joint.

What is an ICON Delta Joint?
The Delta Joint is ICON's patented high-angle joint that combines the durability and sealed characteristics of a ball joint with increased angularity similar to a traditional uniball. It features metal-on-metal construction and is greaseable.

Does K53052 fit a 2010-2014 FJ Cruiser?
No. ICON specifically lists the complete K53052 system for the 2007-2009 FJ Cruiser. ICON offers separate Stage 2 systems for 2010-2014 FJ Cruiser applications.

Does K53052 fit the Lexus GX?
Individual components included in K53052 are used on compatible Lexus GX applications, but ICON does not list the complete K53052 Stage 2 system for the GX. Follow ICON's complete-system application rather than individual component fitment.

What size tires does ICON recommend?
ICON recommends 33" x 11.50" aftermarket tires with its recommended wheel specifications. Larger tires may require trimming or additional modifications.

Can I keep my factory wheels and tires?
Yes. ICON specifically lists OEM wheel and tire fitment as compatible.

Are the ICON shocks rebuildable?
Yes. ICON states that the shocks included in K53052 are fully serviceable.

Does installation require cutting or welding?
No. ICON designed K53052 as a bolt-on suspension system with no cutting or welding required.

Do I need an alignment after installation?
Yes. A professional alignment is recommended after installing the suspension and setting the final front ride height.