ICON Stage 7 Suspension System with Billet Links & CDCV – 2003-2009 4Runner & 2007-2009 FJ Cruiser | K53057

Get the highest level of adjustability and performance in this ICON suspension lineup with the ICON Vehicle Dynamics Stage 7 Suspension System, part #K53057.

Designed specifically for the 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser, the ICON Stage 7 system combines Extended Travel 2.5 Series Remote Reservoir front coilovers with Compression Damping Control Valves (CDCV), billet aluminum upper control arms with ICON Delta Joint, 2-inch rear lift coil springs, billet aluminum rear upper and lower links, an adjustable rear track bar, and 2.5 Aluminum Series Remote Reservoir rear shocks with CDCV and Bump Zone technology.

Compared with the ICON Stage 6 system, Stage 7 adds Compression Damping Control Valve adjustment to both the front and rear shocks, giving the driver quick, tool-free control over compression damping.

This allows the suspension to be tuned for changing terrain, vehicle load, driving style and off-road conditions without replacing components or revalving the shocks.

Vehicle Fitment

Toyota 4Runner

• 2003

• 2004

• 2005

• 2006

• 2007

• 2008

• 2009

Toyota FJ Cruiser

• 2007

• 2008

• 2009

IMPORTANT: ICON lists the complete K53057 Stage 7 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 K53057 suspension system.

Features

• ICON's Stage 7 Suspension System

• Fits 2003-2009 Toyota 4Runner

• Fits 2007-2009 Toyota FJ Cruiser

• Adjustable 0-3.5" front lift

• 2.5 Series Extended Travel Remote Reservoir front coilovers

• Front coilovers feature ICON CDCV compression adjustment

• Increased front droop and wheel travel

• 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

• 2.5 Aluminum Series Remote Reservoir rear shocks

• Rear shocks feature ICON CDCV compression adjustment

• Rear shocks feature ICON Bump Zone technology

• Tool-free compression damping adjustment

• Remote reservoir shocks front and rear

• Increased shock oil volume

• Enhanced cooling during prolonged use

• Improved resistance to shock fade

• Vehicle-specific front and rear shock tuning

• Increased wheel travel and ride quality over stock

• Improved suspension articulation

• Improved rear suspension geometry

• 6061 aircraft-grade CNC-machined aluminum components

• Corrosion-resistant CAD-plated coilover shock bodies

• Heavy-duty 7/8" 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 K53057

What Does Stage 7 Add Over Stage 6?

The major upgrade from ICON Stage 6 to Stage 7 is adjustable compression damping.

Stage 6 already includes:

• Extended Travel Remote Reservoir front coilovers

• Billet Delta Joint upper control arms

• Billet rear lower links

• Billet rear upper links

• Adjustable rear track bar

• 2" rear coil springs

• 2.5 Remote Reservoir rear shocks with Bump Zone

Stage 7 upgrades the shocks to:

• 58745C Extended Travel CDCV front coilovers

• 57810CP CDCV rear remote reservoir shocks

The Compression Damping Control Valve allows compression damping to be adjusted quickly and easily without tools.

This lets the driver change suspension feel based on:

• Street driving

• Trail driving

• High-speed dirt roads

• Washboard roads

• Rock crawling

• Added cargo

• Camping and overland equipment

• Towing or additional vehicle load

• Personal ride preference

ICON Compression Damping Control Valve – CDCV

The defining feature of Stage 7 is ICON's Compression Damping Control Valve technology.

CDCV allows the driver to make quick changes to shock compression damping without removing or disassembling the shocks.

Increasing compression damping can provide a firmer, more controlled feel for aggressive driving or heavier vehicle loads.

Reducing compression damping can provide a softer, more compliant response over rough or slower-speed terrain.

Because Stage 7 includes CDCV on both the front and rear shocks, suspension damping can be tuned more comprehensively than with lower ICON stages.

Adjustable 0-3.5" Front Lift

The ICON Stage 7 front coilovers provide 0 to 3.5 inches of adjustable front lift on a stock-equipped vehicle.

This allows you to tune 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 suspension 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 CDCV Remote Reservoir Front Coilovers

K53057 uses ICON 58745C Extended Travel 2.5 Series Remote Reservoir CDCV Coilovers.

These coilovers provide increased front suspension droop and wheel travel while the remote reservoir increases shock oil volume and improves heat management.

The addition of the CDC Valve allows the driver to adjust compression damping without tools.

Key features include:

• 2.5-inch shock body

• Extended Travel design

• External remote reservoirs

• CDCV compression adjustment

• 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 aluminum CNC-machined components

• FK Rod End bearings

• Fully serviceable construction

ICON Billet Upper Control Arms

The K53057 Stage 7 system 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 additional articulation required to take full advantage of the increased front suspension travel while helping maintain proper 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 traditional ball joint with increased angularity similar to a uniball.

Features include:

• Heavy-duty high-angle design

• Greater angularity than a typical 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 K53057 includes ICON 54000 billet aluminum rear lower links.

These links replace the factory lower links with substantially stronger CNC-machined components while also providing suspension adjustment.

Benefits include:

• CNC-machined 6061 billet aluminum construction

• Increased strength compared with OE 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

The system also includes ICON 54100 billet aluminum rear upper links.

Together with the lower links, these components provide much greater control over rear suspension geometry than the factory fixed-length arms.

Benefits include:

• CNC-machined billet aluminum construction

• Increased strength compared with factory upper links

• Additional rear suspension adjustment

• Works with the lower links to optimize pinion angle

• Improved rear axle geometry

• Designed for demanding on-road and off-road use

Adjustable Rear Track Bar

ICON Stage 7 includes the 54200 Adjustable Rear Track Bar.

Lifting a solid-axle vehicle can cause the rear axle to shift laterally because the factory track bar remains a fixed length.

The adjustable ICON track bar allows the rear axle to be properly centered underneath the vehicle after the suspension has been lifted.

Benefits include:

• Adjustable rear axle placement

• 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

allows the installer to fine-tune:

• Rear pinion angle

• Rear axle placement

• Rear suspension geometry

• Rear handling characteristics

This makes Stage 7 more than simply a shock and spring lift—it provides a comprehensive suspension geometry upgrade.

2" Rear Lift Coil Springs

The K53057 includes ICON 52700 2-inch rear lift coil springs.

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

2.5 Remote Reservoir CDCV Rear Shocks

Stage 7 uses ICON 57810CP 2.5 Aluminum Series Remote Reservoir CDCV rear shocks.

Rear shock features include:

• 2.5-inch aluminum shock body

• External remote reservoirs

• Compression Damping Control Valve

• Tool-free compression adjustment

• Increased shock oil volume

• Enhanced cooling

• Improved resistance to shock fade

• Vehicle-specific tuning

• Heavy-duty shock shafts

• Designed for 1-3 inches of rear lift

• ICON Bump Zone technology

• Fully serviceable construction

ICON Bump Zone Technology

The rear shocks also 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 7 uses 2.5 Series Remote Reservoir shocks at both the front and rear.

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

Combined with CDCV adjustment, this makes the K53057 particularly well suited for:

• Aggressive trail driving

• High-speed off-road use

• Washboard roads

• Overlanding

• Rock crawling

• Extended backcountry travel

• Heavily modified vehicles

• Vehicles with changing cargo loads

• Drivers who want adjustable suspension performance

System Components

The ICON K53057 Stage 7 Suspension System includes:

Front Extended Travel CDCV Remote Reservoir Coilovers

• ICON 58745C

• Quantity: 1 kit / pair

• 2.5 Series Vehicle-Specific Remote Reservoir Coilovers

• Extended Travel

• Compression Damping Control Valve

• 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

• Additional rear suspension adjustment

Adjustable Rear Track Bar

• ICON 54200

• Quantity: 1

• Adjustable rear axle positioning

Rear Coil Springs

• ICON 52700

• Quantity: 1 kit / pair

• 2" rear lift coil springs

Rear CDCV Remote Reservoir Shocks

• ICON 57810CP

• Quantity: 1 pair

• 2.5 Aluminum Series

• Remote reservoir

• Compression Damping Control Valve

• 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 K53057 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 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 K53057 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 K53057 Stage 7 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 7 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: K53057
Product: Stage 7 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 CDCV Coilover
Front Compression Adjustment: Yes – CDCV
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 CDCV
Rear Compression Adjustment: Yes – CDCV
Rear Shock Technology: ICON Bump Zone
Rear Shock Lift Range: 1-3"
Front Coilover Component: 58745C
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: 57810CP
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 175 lbs.
UPC: 840103416908

Frequently Asked Questions

What vehicles does ICON K53057 fit?
ICON lists K53057 for the 2003-2009 Toyota 4Runner and 2007-2009 Toyota FJ Cruiser.

How much lift does ICON K53057 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 6 and Stage 7?
Stage 7 adds ICON Compression Damping Control Valves to both the front and rear shocks, allowing quick, tool-free adjustment of compression damping.

What is ICON CDCV?
CDCV stands for Compression Damping Control Valve. It allows the driver to adjust shock compression damping to change suspension firmness and response without tools or shock disassembly.

Does K53057 have adjustable shocks front and rear?
Yes. Both the front coilovers and rear shocks feature CDCV compression damping adjustment.

Does K53057 have remote reservoir shocks front and rear?
Yes. The system uses 2.5 Series Remote Reservoir Extended Travel coilovers in front and 2.5 Aluminum Series Remote Reservoir shocks in the rear.

What upper control arms are included?
K53057 includes ICON 58551DJ billet aluminum upper control arms with Delta Joint.

Does K53057 include adjustable rear upper and lower links?
Yes. The system includes 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 lifting.

Can the rear pinion angle be adjusted?
Yes. The billet rear links allow the rear pinion angle to be properly adjusted for the lifted suspension.

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.

Does K53057 fit a 2010-2014 FJ Cruiser?
No. ICON lists the complete K53057 Stage 7 system specifically for the 2007-2009 FJ Cruiser.

Does K53057 fit the Lexus GX?
Several individual components included in K53057 have Lexus GX applications, but ICON does not list the complete K53057 Stage 7 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 K53057 are fully serviceable.

Does installation require cutting or welding?
No. ICON designed K53057 as a bolt-on suspension system with no cutting or welding required.