ICON Stage 4 Suspension System with Billet UCA & Remote Reservoir Shocks – 2010-2024 4Runner & 2010-2014 FJ Cruiser | K53064

Upgrade your Toyota with the ICON Vehicle Dynamics Stage 4 Suspension System, part #K53064, a comprehensive suspension package designed for increased wheel travel, improved ride quality, enhanced vehicle control and serious off-road performance.

Designed for the 2010-2024 Toyota 4Runner and 2010-2014 Toyota FJ Cruiser, the ICON Stage 4 system combines Extended Travel 2.5 Series front coilovers, billet aluminum upper control arms with ICON Delta Joint, billet aluminum adjustable rear lower links, 2-inch rear lift coil springs, and 2.5 Aluminum Series Remote Reservoir rear shocks with Bump Zone technology.

The front coilovers provide 0-3.5 inches of adjustable front lift and increased droop travel, while ICON's billet upper control arms provide the articulation and alignment geometry needed to take advantage of the Extended Travel design.

At the rear, billet adjustable lower links provide on-vehicle pinion-angle adjustment, while the larger 2.5 Series Remote Reservoir rear shocks increase oil capacity and cooling for more consistent damping during demanding off-road use.

Vehicle Fitment

Toyota 4Runner

• 2010-2024

Toyota FJ Cruiser

• 2010-2014

IMPORTANT: ICON lists the complete K53064 Stage 4 system specifically for 2010-2024 Toyota 4Runner and 2010-2014 Toyota FJ Cruiser applications.

Important KDSS Fitment Note

KDSS-equipped vehicles require ICON rear track bar #54200.

ICON also recommends an adjustable rear track bar on non-KDSS vehicles to help realign the rear axle after lifting, although it is not required.

Features

• Complete ICON Stage 4 Suspension System

• Fits 2010-2024 Toyota 4Runner

• Fits 2010-2014 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

• Improved front suspension and alignment geometry

• On-vehicle caster and camber adjustment

• ICON billet aluminum adjustable rear lower links

• On-vehicle rear pinion-angle adjustment

• Increased rear suspension articulation

• Reduced suspension deflection

• 2" rear lift coil springs

• ICON 2.5 Aluminum Series Remote Reservoir rear shocks

• ICON Bump Zone technology

• Remote reservoirs increase shock oil capacity

• Improved shock cooling during demanding use

• More consistent damping during prolonged suspension cycling

• Vehicle-specific front and rear shock tuning

• Increased wheel travel and ride quality over stock

• Heavy-duty 7/8" front and rear shock shafts

• 6061 aircraft-grade CNC-machined aluminum components

• Corrosion-resistant CAD-plated coilover shock bodies

• FK Rod End bearings for increased longevity and minimal deflection

• Fully serviceable shocks

• Bolt-on installation

• No cutting or welding required

• ICON Vehicle Dynamics part number K53064

What Does Stage 4 Add Over Stage 3?

The primary upgrade from ICON K53063 Stage 3 to K53064 Stage 4 is the rear shock package.

Stage 3 already includes:

• Extended Travel 2.5 Series front coilovers

• Billet aluminum Delta Joint upper control arms

• Billet aluminum adjustable rear lower links

• 2" rear lift coil springs

• Vehicle-specific rear shocks

Stage 4 upgrades the rear shocks to:

• ICON 57810P 2.5 Aluminum Series Remote Reservoir rear shocks

• Larger 2.5-inch shock bodies

• External remote reservoirs

• Increased shock oil volume

• Improved heat dissipation

• More consistent damping during prolonged use

• Heavy-duty 7/8-inch shock shafts

• ICON Bump Zone technology

This makes Stage 4 especially attractive for vehicles that see more demanding off-road use, extended trail driving, washboard roads and conditions that generate significant shock heat.

Adjustable 0-3.5" Front Lift

The ICON Stage 4 front coilovers provide 0 to 3.5 inches of adjustable front lift.

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

Unlike a basic spacer lift, ICON's coilovers replace the factory shock and spring assemblies with performance suspension components engineered 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 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

K53064 uses ICON 58647 Extended Travel 2.5 Series Vehicle-Specific Internal Reservoir Coilovers.

The Extended Travel design increases front droop travel when paired with the included ICON billet upper control arms.

Key features include:

• 2.5-inch shock body

• Extended Travel design

• Increased front droop travel

• Vehicle-specific shock tuning

• Adjustable 0-3.5" front lift

• Internal reservoir design

• 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 K53064 Stage 4 system includes ICON 58551DJ billet aluminum upper control arms.

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

Benefits include:

• CNC-machined 6061 billet aluminum construction

• Increased strength and durability

• Improved front suspension geometry

• Increased joint articulation

• On-vehicle caster and camber adjustment

• Helps retain factory alignment specifications

• Allows proper wheel alignment at increased ride height

• ICON patented Delta Joint

ICON Delta Joint

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

The Delta Joint is a heavy-duty high-angle ball joint designed to combine the durability and weather protection of a conventional ball joint with the increased angularity and performance characteristics of a traditional uniball.

Delta Joint 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

ICON Billet Rear Lower Links

The K53064 Stage 4 system includes ICON 54000 billet aluminum adjustable rear lower links.

These links are CNC machined from 6061 aluminum and anodized for corrosion resistance.

They replace the factory rear lower links while providing additional strength, articulation and suspension adjustment.

Key benefits include:

• CNC-machined 6061 billet aluminum construction

• Anodized for corrosion resistance

• Increased strength compared with factory links

• PTFE-lined FK rod ends

• Greaseable polyurethane bushings

• Increased suspension articulation

• Reduced suspension deflection

• ICON Double Adjuster system

• On-vehicle link-length adjustment

• On-vehicle rear pinion-angle adjustment

Adjustable Rear Pinion Angle

Lifting a vehicle changes the relationship between the rear axle and driveshaft.

The ICON billet rear lower links allow the installer to adjust link length and optimize the rear pinion angle after the suspension has been lifted.

ICON's Double Adjuster system allows adjustments to be performed on the vehicle, simplifying suspension setup and fine-tuning.

2" Rear Lift Coil Springs

The K53064 includes ICON 52700 2-inch rear lift coil springs.

These springs provide approximately 2 inches of rear lift over stock, helping create a level front-to-rear stance while maintaining on-road comfort and improving off-road suspension performance.

2.5 Aluminum Series Remote Reservoir Rear Shocks

A major feature of the K53064 Stage 4 system is the pair of ICON 57810P 2.5 Aluminum Series Vehicle-Specific Remote Reservoir rear shocks.

Compared with the 2.0 internal reservoir shocks used in Stage 3, these larger remote reservoir shocks provide increased oil capacity and improved cooling for more consistent damping during demanding use.

Rear shock features include:

• 2.5-inch aluminum shock bodies

• External remote reservoirs

• Heavy-duty 7/8-inch shock shafts

• Increased shock oil volume

• Improved heat dissipation

• More consistent damping during prolonged use

• Vehicle-specific shock tuning

• Designed for 1-3 inches of rear lift

• ICON Bump Zone technology

• Fully serviceable construction

ICON Bump Zone Technology

The Stage 4 rear shocks feature ICON's internal Bump Zone technology.

The Bump Zone provides an additional 20% of damping force as the suspension approaches a hard bottom-out condition.

This additional damping helps:

• Better control hard bottom-outs

• Reduce harsh suspension impacts

• Improve vehicle control

• Manage larger off-road impacts

• Maintain a smoother and more controlled ride

This technology allows the shock to remain compliant during normal suspension movement while providing additional control when the suspension is pushed toward the end of its travel.

Why Remote Reservoir Shocks?

Remote reservoir shocks provide several advantages during demanding off-road use.

The external reservoir increases the total volume of shock oil and helps keep the shock operating at a cooler temperature.

Benefits include:

• Increased shock oil capacity

• Improved heat management

• Reduced shock fade

• More consistent damping

• Better performance during prolonged off-road driving

• Improved control over repeated impacts and rough terrain

For vehicles that regularly encounter washboard roads, extended trail driving or aggressive off-road conditions, this is one of the most significant upgrades Stage 4 provides over Stage 3.

KDSS Compatibility

The K53064 can be used with KDSS-equipped applications, but ICON specifically states:

KDSS-equipped vehicles require ICON rear track bar #54200.

This is an important fitment requirement for customers ordering K53064 for a KDSS-equipped 4Runner or FJ Cruiser.

Adjustable Rear Track Bar Recommendation

Even on non-KDSS vehicles, ICON recommends an adjustable rear track bar to help realign the rear axle after lifting, although it is not required.

Because the factory track bar has a fixed length, increasing rear ride height can shift the solid rear axle laterally.

An adjustable track bar allows the axle to be properly repositioned beneath the vehicle.

Recommended Track Bar: ICON #54200

Wheel & Tire Recommendations

ICON confirms that OEM wheels and tires are compatible with the K53064 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.

Expedition Coil Option for Heavier Vehicles

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

This may be beneficial for 4Runners and FJ Cruisers 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 K53064 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 K53064 Stage 4 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 the system includes adjustable rear lower links, the rear pinion angle should also be checked and properly adjusted during installation.

System Components

The ICON K53064 Stage 4 Suspension System includes:

Front Extended Travel Coilovers

• ICON 58647

• Quantity: 1 kit / 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

• On-vehicle caster/camber adjustment

Billet Rear Lower Links

• ICON 54000

• Quantity: 1 kit

• CNC-machined 6061 billet aluminum

• PTFE-lined FK rod ends

• Greaseable polyurethane bushings

• ICON Double Adjuster system

• On-vehicle link-length adjustment

• Rear pinion-angle adjustment

Rear Coil Springs

• ICON 52700

• Quantity: 1 kit / 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

Product Specifications

Manufacturer: ICON Vehicle Dynamics
Part Number: K53064
Product: Stage 4 Suspension System
Toyota 4Runner Fitment: 2010-2024
Toyota FJ Cruiser Fitment: 2010-2014
Front Shock Series: ICON 2.5 Series Extended Travel
Front Shock Type: Internal Reservoir Coilover
Front Lift Range: 0-3.5"
Upper Control Arms: ICON Billet Aluminum
UCA Joint: ICON Delta Joint
UCA Adjustment: On-Vehicle Caster/Camber
Rear Lower Links: ICON Billet Aluminum
Rear Link Adjustment: On-Vehicle Link Length / Pinion Angle
Rear Coil Spring Lift: 2"
Rear Shock Series: ICON 2.5 Aluminum Series
Rear Shock Type: Remote Reservoir
Rear Shock Lift Range: 1-3"
Rear Shock Technology: ICON Bump Zone
Front Shock Shaft: 7/8"
Rear Shock Shaft: 7/8"
Front Coilover Component: 58647
Upper Control Arm Component: 58551DJ
Rear Lower Link Component: 54000
Rear Coil Spring Component: 52700
Rear Shock Component: 57810P
KDSS: Requires ICON 54200 Rear Track Bar
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: 153 lbs.
UPC: 840103416991

Frequently Asked Questions

What vehicles does ICON K53064 fit?
ICON lists K53064 for the 2010-2024 Toyota 4Runner and 2010-2014 Toyota FJ Cruiser.

How much lift does ICON K53064 provide?
The front coilovers provide 0-3.5 inches of adjustable lift, while the included rear springs provide approximately 2 inches of rear lift.

What is the difference between ICON K53063 Stage 3 and K53064 Stage 4?
Stage 4 upgrades the rear shocks to ICON 2.5 Aluminum Series Remote Reservoir shocks with Bump Zone technology. These larger shocks provide increased oil capacity, improved cooling and more consistent damping during demanding off-road use.

What rear shocks are included with K53064?
K53064 includes ICON 57810P 2.5 Aluminum Series Remote Reservoir rear shocks with Bump Zone technology.

What is ICON Bump Zone technology?
ICON's Bump Zone provides an additional 20% of damping force to help better control hard bottom-outs.

Why are remote reservoir shocks better for demanding off-road use?
Remote reservoirs increase shock oil volume and improve cooling, helping maintain more consistent damping during extended periods of heavy suspension use.

Which upper control arms are included?
K53064 includes ICON 58551DJ billet aluminum upper control arms with Delta Joint.

What rear lower links are included?
K53064 includes ICON 54000 billet aluminum adjustable rear lower links.

Can the rear pinion angle be adjusted?
Yes. The ICON billet rear lower links provide on-vehicle pinion-angle adjustment using ICON's Double Adjuster system.

Does K53064 fit KDSS-equipped vehicles?
Yes, but ICON specifically states that KDSS-equipped vehicles require ICON rear track bar #54200.

Is an adjustable rear track bar required on non-KDSS vehicles?
No. ICON recommends an adjustable track bar to help realign the rear axle after lifting, but it is not required on non-KDSS vehicles.

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 confirms that OEM wheels and tires are compatible.

Is a heavier front spring available?
Yes. ICON offers an optional 700 lb/in Expedition Coil for heavier-equipped vehicles.

Are the ICON shocks rebuildable?
Yes. ICON states that the shocks included with K53064 are fully serviceable.

Does installation require cutting or welding?
No. K53064 is a bolt-on suspension system with no cutting or welding required.