ICON Stage 3 Suspension System with Billet UCA & Rear Links – 2003-2009 4Runner & 2007-2009 FJ Cruiser | K53053

Upgrade your Toyota's suspension with the ICON Vehicle Dynamics Stage 3 Suspension System, part #K53053, a complete performance suspension package designed for the 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser.

The ICON Stage 3 system combines Extended Travel 2.5 Series front coilovers, billet aluminum upper control arms with Delta Joint, 2-inch rear lift coil springs, 2.0 Aluminum Series rear shocks, and ICON's premium billet aluminum rear lower links.

Compared with the ICON Stage 2 system, Stage 3 adds the billet rear lower links for increased strength, adjustable rear pinion angle and improved rear suspension geometry.

The result is a comprehensive suspension upgrade designed to improve ride quality, wheel travel, suspension articulation, handling and off-road performance while providing up to 3.5 inches of adjustable front lift.

Vehicle Fitment

Toyota 4Runner

• 2003

• 2004

• 2005

• 2006

• 2007

• 2008

• 2009

Toyota FJ Cruiser

• 2007

• 2008

• 2009

IMPORTANT: ICON lists the complete K53053 Stage 3 system specifically for 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser applications.

Individual components included in K53053 may fit additional Toyota and Lexus vehicles, but that does not extend the fitment of the complete K53053 suspension system.

Features

• Complete ICON Stage 3 Suspension System

• Fits 2003-2009 Toyota 4Runner

• Fits 2007-2009 Toyota FJ Cruiser

• Adjustable 0-3.5" front lift

• ICON Extended Travel 2.5 Series front coilovers

• Increased front droop and wheel travel

• ICON billet aluminum upper control arms

• ICON patented Delta Joint

• ICON billet aluminum rear lower links

• Rear lower links provide on-vehicle pinion angle adjustment

• Rear links designed for proper roll-steer geometry

• Machined nylon skid strips help protect rear links when sliding over rocks

• 2" rear lift coil springs

• ICON 2.0 Aluminum Series rear shocks

• Vehicle-specific front and rear shock tuning

• Increased wheel travel and ride quality over stock

• Improved on-road and off-road handling

• 6061 aircraft-grade CNC-machined aluminum components

• Corrosion-resistant CAD-plated front 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 K53053

What Does Stage 3 Add Over Stage 2?

The ICON K53053 Stage 3 system includes the major suspension components found in the K53052 Stage 2 system and adds ICON's premium billet aluminum rear lower link kit.

Stage 2 includes:

• Extended Travel 2.5 Series front coilovers

• Billet aluminum Delta Joint upper control arms

• 2" rear lift coil springs

• 2.0 Aluminum Series rear shocks

Stage 3 adds:

• ICON 54000 billet aluminum rear lower links

The rear links improve strength and durability while also allowing the rear suspension geometry and pinion angle to be properly adjusted.

Adjustable 0-3.5" Front Lift

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

This allows the front ride height to be adjusted based on your desired stance, tire size and vehicle setup.

Unlike a basic spacer lift, the ICON system replaces the factory front shock and spring assembly with a performance-oriented 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 bumpers, winches, skid plates and other accessories can affect actual ride height.

Extended Travel 2.5 Series Front Coilovers

The K53053 uses ICON 58645 Extended Travel 2.5 Series Vehicle-Specific Internal Reservoir Coilovers.

The Extended Travel design provides additional front suspension droop and wheel travel when combined with the included ICON upper control arms.

Key features include:

• 2.5-inch shock body

• Extended Travel design

• Vehicle-specific shock tuning

• Adjustable 0-3.5" front lift

• 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

ICON Billet Upper Control Arms

The Stage 3 system includes ICON 58551DJ billet aluminum upper control arms.

These premium UCAs are CNC machined from 6061 aluminum and designed to complement the Extended Travel front coilovers.

The upgraded control arms allow the suspension to take advantage of the additional travel provided by the Extended Travel coilovers while providing the geometry and articulation needed for a lifted vehicle.

ICON Delta Joint

The billet upper control arms use ICON's patented Delta Joint.

The Delta Joint is a heavy-duty high-angle joint designed to combine the durability and weather resistance desirable in a ball joint with the increased angularity associated with a traditional uniball.

Features include:

• Heavy-duty high-angle 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 contaminants away from internal components

• Designed for quiet operation

• Excellent for daily-driven and off-road vehicles

Billet Aluminum Rear Lower Links

The defining upgrade of the ICON Stage 3 system is the addition of the ICON 54000 Billet Aluminum Rear Lower Link Kit.

These links replace the factory rear lower links with substantially stronger CNC-machined 6061 billet aluminum components.

The ICON rear lower links provide several important benefits:

• Increased strength compared with OE links

• On-vehicle pinion angle adjustment

• Improved rear suspension geometry

• Correct roll-steer geometry

• Improved on-road and off-road handling

• Heavy-duty billet aluminum construction

• Replaceable/protective nylon skid surface

For lifted vehicles, the ability to adjust pinion angle can be particularly valuable for maintaining proper driveline geometry.

Machined Nylon Skid Strip

ICON incorporates a machined nylon skid strip into the billet rear lower links.

When the lower links contact rocks or other trail obstacles, the nylon skid surface helps the suspension link slide across the obstacle rather than directly grinding against the aluminum link structure.

This provides additional protection for one of the most exposed components in the rear suspension.

Corrected Roll-Steer Geometry

ICON didn't design the billet rear lower links simply to be stronger than the factory components.

The links are engineered to provide proper roll-steer geometry, contributing to improved handling and more predictable rear suspension behavior both on and off road.

This makes them a functional suspension upgrade in addition to being a heavy-duty replacement for the factory links.

2" Rear Lift Coil Springs

The K53053 includes ICON 52700 2-inch rear lift coil springs.

The rear springs complement the adjustable front coilovers and provide additional rear ride height while maintaining the balanced front-to-rear performance of the complete ICON system.

2.0 Aluminum Series Rear Shocks

ICON pairs the rear lift springs with 56505 2.0 Aluminum Series Vehicle-Specific Internal Reservoir rear shocks.

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 for balanced damping and vehicle control.

System Components

The ICON K53053 Stage 3 Suspension System includes:

Front Extended Travel Coilovers

• ICON 58645

• Quantity: 1 pair

• 2.5 Series Vehicle-Specific Internal Reservoir Coilovers

• Extended Travel

• Adjustable 0-3.5" front lift

Billet Upper Control Arms

• ICON 58551DJ

• Quantity: 1 kit

• CNC-machined billet aluminum

• ICON Delta Joint

Billet Rear Lower Links

• ICON 54000

• Quantity: 1 kit

• CNC-machined 6061 billet aluminum

• Adjustable pinion angle

• Nylon skid protection

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 K53053 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"

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

Actual tire clearance can vary based on wheel dimensions, 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 may be useful for FJ Cruisers and 4Runners carrying substantial permanent front-end weight from accessories such as:

• Steel bumpers

• Winches

• Skid plates

• Recovery equipment

• Other permanently installed accessories

Fully Serviceable ICON Shocks

The ICON shocks included with K53053 are fully serviceable.

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

Bolt-On Installation

The ICON K53053 Stage 3 Suspension System is designed as a bolt-on upgrade.

No cutting or welding is required.

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

Because Stage 3 also replaces the rear lower links, the rear pinion angle should be properly set during installation.

Product Specifications

Manufacturer: ICON Vehicle Dynamics
Part Number: K53053
Product: Stage 3 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 Lower Links: ICON Billet Aluminum
Rear Link Adjustment: On-Vehicle Pinion Angle Adjustment
Rear Coil Spring Lift: 2"
Rear Shock Series: ICON 2.0 Aluminum Series Internal Reservoir
Rear Shock Lift Range: 1-3"
Front Shock Shaft: 7/8"
Rear Shock Shaft: 5/8"
Front Coilover Component: 58645
Upper Control Arm Component: 58551DJ
Rear Lower Link Component: 54000
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

Frequently Asked Questions

What vehicles does ICON K53053 fit?
ICON lists K53053 for the 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser.

How much lift does ICON K53053 provide?
The front Extended Travel coilovers provide 0-3.5 inches of adjustable lift, while the included rear coil springs provide approximately 2 inches of rear lift.

What is the difference between ICON K53052 Stage 2 and K53053 Stage 3?
K53053 Stage 3 adds ICON's 54000 billet aluminum rear lower links to the major components included in the Stage 2 system.

What are the benefits of the billet rear lower links?
The ICON billet links provide increased strength over the OE links, on-vehicle pinion angle adjustment, corrected roll-steer geometry and a machined nylon skid surface to help protect the links when contacting rocks.

Can the rear pinion angle be adjusted?
Yes. The ICON billet rear lower links allow on-vehicle pinion angle adjustment.

What upper control arms are included?
K53053 includes ICON 58551DJ billet aluminum upper control arms with Delta Joint.

Does K53053 use Extended Travel coilovers?
Yes. K53053 includes ICON 58645 Extended Travel 2.5 Series front coilovers.

Does K53053 fit a 2010-2014 FJ Cruiser?
No. ICON lists the complete K53053 Stage 3 system specifically for the 2007-2009 FJ Cruiser.

Does K53053 fit the Lexus GX?
Individual components within K53053 may have Lexus GX applications, but ICON does not list the complete K53053 Stage 3 system for the GX. Complete-system fitment should follow ICON's K53053 application.

What size tires does ICON recommend?
ICON recommends 33" x 11.50" aftermarket tires with its specified wheel dimensions. Larger tires may require fender trimming and additional modifications.

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

Are the ICON shocks rebuildable?
Yes. The ICON shocks included with K53053 are fully serviceable.

Does installation require cutting or welding?
No. ICON designed K53053 as a bolt-on system with no cutting or welding required.

Do I need an alignment after installation?
Yes. A professional alignment is recommended after installation and final ride-height adjustment.