ICON Stage 6 Suspension System with Billet Links & Remote Reservoir Shocks – 2003-2009 4Runner & 2007-2009 FJ Cruiser | K53056

Upgrade your Toyota with the ICON Vehicle Dynamics Stage 6 Suspension System, part #K53056, a comprehensive suspension package designed for the 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser.

The ICON Stage 6 system combines Extended Travel 2.5 Series Remote Reservoir front coilovers, billet aluminum upper control arms with ICON Delta Joint, 2-inch rear lift coil springs, billet aluminum rear lower links, billet aluminum rear upper links, an adjustable rear track bar, and 2.5 Aluminum Series Remote Reservoir rear shocks with Bump Zone technology.

Compared with the ICON Stage 5 system, Stage 6 adds the billet rear upper link kit and adjustable rear track bar, providing greater control over rear suspension geometry, pinion angle and rear axle placement.

The result is one of ICON's most complete suspension systems for the early 4Runner and FJ Cruiser platform, designed to improve wheel travel, ride quality, suspension articulation, handling, axle positioning and off-road performance.

Vehicle Fitment

Toyota 4Runner

• 2003

• 2004

• 2005

• 2006

• 2007

• 2008

• 2009

Toyota FJ Cruiser

• 2007

• 2008

• 2009

IMPORTANT: ICON lists the complete K53056 Stage 6 system specifically for 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser applications.

Individual components included in the system may fit additional Toyota and Lexus vehicles, but that does not extend the fitment of the complete K53056 suspension system.

Features

• Complete ICON Stage 6 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 Remote Reservoir front coilovers

• Increased front droop and wheel travel

• Increased front shock oil volume and enhanced cooling

• ICON billet aluminum upper control arms

• ICON patented Delta Joint

• ICON billet aluminum rear lower links

• ICON billet aluminum rear upper links

• Adjustable rear track bar

• Rear links provide on-vehicle pinion angle adjustment

• Adjustable track bar helps properly center the rear axle

• 2" rear lift coil springs

• ICON 2.5 Aluminum Series Remote Reservoir rear shocks

• Rear shocks feature ICON Bump Zone technology

• Remote reservoir shocks front and rear

• Improved heat management during prolonged off-road use

• Increased resistance to shock fade

• Vehicle-specific front and rear shock tuning

• Increased wheel travel and ride quality over stock

• Improved rear suspension geometry

• Improved on-road and off-road handling

• 6061 aircraft-grade CNC-machined aluminum components

• Corrosion-resistant CAD-plated coilover shock bodies

• Heavy-duty 7/8" front shock shafts

• Heavy-duty 7/8" rear shock shafts

• FK Rod End bearings for extended longevity and minimal deflection

• Fully serviceable shocks

• Bolt-on installation

• No cutting or welding required

• ICON Vehicle Dynamics part number K53056

What Does Stage 6 Add Over Stage 5?

The major upgrade from ICON Stage 5 to Stage 6 is the additional rear suspension adjustability.

Stage 5 already includes:

• Extended Travel Remote Reservoir front coilovers

• Billet Delta Joint upper control arms

• Billet rear lower links

• 2" rear coil springs

• 2.5 Remote Reservoir rear shocks with Bump Zone

Stage 6 adds:

• ICON 54100 Billet Rear Upper Links

• ICON 54200 Adjustable Rear Track Bar

These additions allow greater control over the geometry and positioning of the rear axle after the vehicle has been lifted.

Adjustable 0-3.5" Front Lift

The ICON Stage 6 front coilovers provide 0 to 3.5 inches of adjustable front lift on a stock-equipped vehicle.

This allows you to tune 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 assemblies with performance coilovers 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 Remote Reservoir Front Coilovers

The K53056 uses ICON 58745 Extended Travel 2.5 Series Remote Reservoir Coilovers.

These coilovers provide increased front suspension droop and wheel travel while the remote reservoirs increase shock oil volume and improve heat management during prolonged suspension cycling.

Key features include:

• 2.5-inch shock body

• Extended Travel design

• External remote reservoirs

• Increased shock oil volume

• Enhanced cooling

• Improved resistance to shock fade

• 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 CNC-machined components

• FK Rod End bearings

• Fully serviceable construction

ICON Billet Upper Control Arms

The K53056 includes ICON 58551DJ billet aluminum upper control arms.

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

The upgraded control arms provide the articulation required to take advantage of the increased front suspension travel while helping maintain appropriate geometry at increased ride heights.

ICON Delta Joint

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

The Delta Joint combines the durability and weather resistance of a ball joint with increased angularity similar to 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 Rear Lower Links

The K53056 includes ICON 54000 billet aluminum rear lower links.

These links replace the factory rear lower links with significantly stronger CNC-machined components while also adding suspension adjustment capability.

Benefits include:

• CNC-machined 6061 billet aluminum construction

• Increased strength compared with OE lower links

• On-vehicle pinion angle adjustment

• Improved rear suspension geometry

• Correct roll-steer geometry

• Greaseable dual-stage bushings

• Improved on-road and off-road handling

Billet Rear Upper Links

Stage 6 adds the ICON 54100 Billet Rear Upper Link Kit.

These links work with the billet lower links to provide greater control over rear suspension geometry.

Benefits include:

• CNC-machined billet aluminum construction

• Increased strength compared with factory upper links

• Additional rear suspension adjustment

• Works with lower links to optimize pinion angle

• Helps improve rear suspension geometry

• Designed for demanding street and off-road applications

With both upper and lower rear links adjustable, Stage 6 provides much more complete control over rear axle geometry than the lower ICON stages.

Adjustable Rear Track Bar

Stage 6 also includes ICON 54200 Adjustable Rear Track Bar.

Lifting the rear of a solid-axle vehicle can shift the axle laterally because of the factory track bar's fixed length.

The adjustable ICON track bar allows the rear axle to be properly centered underneath the vehicle after the suspension height is changed.

Benefits include:

• Adjustable rear axle positioning

• Helps center the axle after lifting

• Improved rear suspension geometry

• Heavy-duty construction

• Works with the ICON upper and lower links as a complete rear suspension system

Complete Rear Suspension Adjustment

The combination of:

• Billet rear lower links

• Billet rear upper links

• Adjustable rear track bar

gives the Stage 6 system much greater control over rear suspension setup.

This allows the installer to fine-tune:

• Rear pinion angle

• Rear axle placement

• Suspension geometry

• Rear handling characteristics

For owners looking for a more thoroughly engineered suspension system rather than simply additional ride height, Stage 6 provides a significant advantage.

2" Rear Lift Coil Springs

The K53056 includes ICON 52700 2-inch rear lift coil springs.

These springs complement the adjustable front suspension while providing additional rear ride height and maintaining balanced front-to-rear suspension performance.

2.5 Aluminum Series Remote Reservoir Rear Shocks

Stage 6 uses ICON 57810P 2.5 Aluminum Series Remote Reservoir rear shocks.

Features include:

• 2.5-inch aluminum shock body

• External remote reservoirs

• Increased shock oil volume

• Enhanced cooling

• Improved resistance to shock fade

• Vehicle-specific tuning

• Heavy-duty 7/8-inch shock shafts

• Designed for 1-3 inches of rear lift

• ICON Bump Zone technology

• Fully serviceable construction

ICON Bump Zone Technology

The rear shocks included with K53056 feature ICON's Bump Zone technology.

Bump Zone significantly increases damping during the final 2 inches of compression travel.

As the rear suspension approaches full compression, the additional damping helps slow axle movement before the suspension reaches the end of its travel.

This helps:

• Reduce harsh bottom-out

• Improve suspension control

• Absorb larger impacts

• Maintain better vehicle composure

• Provide a more controlled ride over varying terrain

Remote Reservoir Shocks Front & Rear

Stage 6 uses 2.5 Series Remote Reservoir shocks at both the front and rear.

The increased oil volume and enhanced cooling help the shocks maintain consistent damping during prolonged suspension cycling.

This makes the system particularly well suited for:

• Aggressive trail driving

• High-speed off-road use

• Washboard roads

• Overlanding

• Extended backcountry travel

• Heavily modified vehicles

• Repeated rough-terrain driving

System Components

The ICON K53056 Stage 6 Suspension System includes:

Front Extended Travel Remote Reservoir Coilovers

• ICON 58745

• Quantity: 1 pair

• 2.5 Series Vehicle-Specific Remote 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 billet aluminum

• On-vehicle pinion angle adjustment

Billet Rear Upper Links

• ICON 54100

• Quantity: 1 kit

• CNC-machined billet aluminum

• Increased rear suspension adjustment

Adjustable Rear Track Bar

• ICON 54200

• Quantity: 1

• Adjustable rear axle positioning

Rear Coil Springs

• ICON 52700

• Quantity: 1 pair

• 2" rear lift coil springs

Rear Remote Reservoir Shocks

• ICON 57810P

• Quantity: 1 pair

• 2.5 Aluminum Series

• Remote reservoir

• Vehicle-specific tuning

• Bump Zone technology

• Designed for 1-3" rear lift

Wheel & Tire Recommendations

ICON confirms that OEM wheels and tires are compatible with the K53056 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"

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

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

Important Remote Reservoir Clearance Note

ICON notes that the remote reservoir mounting brackets may interfere with some aftermarket bumper mounts or windshield washer bottles.

If your vehicle has an aftermarket bumper, relocated washer reservoir or other modifications in the reservoir mounting area, verify clearance before installation.

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 K53056 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 K53056 Stage 6 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 front ride-height adjustment.

Because Stage 6 includes adjustable rear upper and lower links plus an adjustable rear track bar, the rear pinion angle and axle position should also be properly set during installation.

Product Specifications

Manufacturer: ICON Vehicle Dynamics
Part Number: K53056
Product: Stage 6 Suspension System
Toyota 4Runner Fitment: 2003-2009
Toyota FJ Cruiser Fitment: 2007-2009
Front Shock Series: ICON 2.5 Series Extended Travel
Front Shock Type: Remote Reservoir Coilover
Front Lift Range: 0-3.5"
Upper Control Arms: ICON Billet Aluminum
UCA Joint: ICON Delta Joint
Rear Lower Links: ICON Billet Aluminum
Rear Upper Links: ICON Billet Aluminum
Rear Track Bar: Adjustable
Rear Link Adjustment: On-Vehicle Pinion Angle Adjustment
Rear Coil Spring Lift: 2"
Rear Shock Series: ICON 2.5 Aluminum Series
Rear Shock Type: Remote Reservoir
Rear Shock Technology: ICON Bump Zone
Rear Shock Lift Range: 1-3"
Front Shock Shaft: 7/8"
Rear Shock Shaft: 7/8"
Front Coilover Component: 58745
Upper Control Arm Component: 58551DJ
Rear Lower Link Component: 54000
Rear Upper Link Component: 54100
Rear Track Bar Component: 54200
Rear Coil Spring Component: 52700
Rear Shock Component: 57810P
OEM Wheel & Tire Compatible: Yes
Recommended Tire Size: 33" x 11.50"
Installation: Bolt-On
Cutting Required: No
Welding Required: No
Shocks Serviceable: Yes
Shipping Weight: Approximately 172 lbs.
UPC: 840103416885

Frequently Asked Questions

What vehicles does ICON K53056 fit?
ICON lists K53056 for the 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser.

How much lift does ICON K53056 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 Stage 5 and Stage 6?
Stage 6 adds billet rear upper links and an adjustable rear track bar to the Stage 5 package, providing more complete control over rear suspension geometry and axle position.

Does K53056 have adjustable rear upper and lower links?
Yes. K53056 includes ICON 54000 billet rear lower links and 54100 billet rear upper links.

What does the adjustable rear track bar do?
The ICON 54200 adjustable rear track bar allows the rear axle to be properly centered beneath the vehicle after the suspension has been lifted.

Can the rear pinion angle be adjusted?
Yes. The combination of adjustable upper and lower rear links allows the rear pinion angle to be properly tuned for the lifted suspension.

Does K53056 have remote reservoir shocks front and rear?
Yes. The system uses 2.5 Series Extended Travel Remote Reservoir coilovers in front and 2.5 Aluminum Series Remote Reservoir shocks in the rear.

What is ICON Bump Zone technology?
Bump Zone increases rear shock damping during the final 2 inches of compression travel, helping reduce harsh bottom-out and improve suspension control.

What upper control arms are included?
K53056 includes ICON 58551DJ billet aluminum upper control arms with Delta Joint.

Does K53056 fit a 2010-2014 FJ Cruiser?
No. ICON lists the complete K53056 Stage 6 system specifically for the 2007-2009 FJ Cruiser.

Does K53056 fit the Lexus GX?
Several individual components in the system have Lexus GX applications, but ICON does not list the complete K53056 Stage 6 system for the GX. Follow ICON's complete-system fitment.

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

Can I use factory wheels and tires?
Yes. ICON specifically lists OEM wheels and tires as compatible.

Can the remote reservoir brackets interfere with aftermarket parts?
Yes. ICON notes that the remote reservoir mounting brackets may interfere with certain aftermarket bumper mounts or windshield washer bottles.

Are the ICON shocks rebuildable?
Yes. ICON states that the shocks included with K53056 are fully serviceable.

Does installation require cutting or welding?
No. ICON designed K53056 as a bolt-on suspension system with no cutting or welding required.