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ICON Vehicle Dynamics introduces our Heavy Rate Rear Coilover Spring for 2021-23 Ford Broncos equipped with ICON Coilovers. This is a dual rate coil that provides extra weight capacity for those who frequently load out their Broncos with extra gear and equipment while maintaining excellent on- and off-road performance characteristics. Heavy Rate Rear Coils are available as a retrofit kit for those who already own ICON rear coilovers, and as "Heavy Rate" versions of our assembled Coilovers and Complete Suspension Systems.

LOAD UP FOR ADVENTURE

ICON Heavy Rate Rear Coil Springs will result in a slight positive rake when the Bronco is unloaded. Actual numbers will vary for each individual Bronco. But the ICON 4-Door Badlands, which is equipped with the ICON Stage 8 Suspension System with Heavy Rate Rear Coils has a modest 1° positive rake with no extra cargo. Note that the Bronco is equpped with a 37" spare tire and an ICON Impact steel plate rear bumper.

 

With a moderate load-out of 150 lbs. added to the rear cargo area, the Bronco squats just over a half inch, approaching a near-level rake of just 0.4°.

To simulate a heavier load-out that is more typical of overlanders and others who carry lots of extra gear, we loaded the Bronco up with 280 lbs. in the cargo area and 520 lbs. in the rear seat area, for a total of 800 lbs. of extra weight. This lowered the rear ride height by 2" compared to unloaded, resulting in a slight -0.4° negative rake.

Heavy Rate is a perfect all-around rear coil spring for those who either keep their Broncos heavily loaded full time, or only for occasional expeditions but want to maintain the best possible performance across various load-out scenarios.

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HEAVY RATE REAR COIL SPRING RETROFIT KIT 

• 48200 21-23 BRONCO HEAVY RATE REAR COIL KIT

The Heavy Rate Rear Coil Spring Kit is used to retrofit existing ICON Rear Coilovers to the Heavy Rate specification. The kit simply includes the replacement Heavy Rate coil springs.

 

KEY FEATURES: 

• Increased cargo load carrying capacity with less suspension squat.
• Unique ICON engineered dual rate coil spring
• Designed for full time large cargo loads

Important: COIL CUP KIT #48201 MAY BE NEEDED

Before ordering the Heavy Rate Coil Spring Retrofit Kit, identify which coil springs the coilovers were originally built with. The initial run of coilovers (early build) will require the new design Lower Coil Cup Kit, which may be ordered separately as p/n 48201. These early coil springs will be stamped with the number 148350 as shown in the image here. It may be necessary to spin the coil spring or use a small mirror to see the part number. Coilovers that bear the number 148351 on the coil spring already have the new design lower coil cup, and do not require the #48201 Coil Cup Kit to install the Heavy Rate springs.

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BRONCO HEAVY RATE REAR COILOVERS

2.5 VS HEAVY RATE REAR COILOVERS WITH INTERNAL RESERVOIRS

• 48613    21-23 BRONCO REAR 2.5 VS IR COILOVER KIT HEAVY RATE SPRING

KEY FEATURES: 

• Increased wheel travel and ride quality over stock
• Vehicle specific tuned for superior shock damping and control
• Heavy Rate dual rate coil spring engineered by ICON for heavier load-outs
• Adjustable up to 2-3" of rear lift height on non-Sasquatch or 1.25-2.25” of rear lift on Sasquatch Broncos
• 6061 Aircraft grade aluminum CNC machined components
• Corrosion resistant CAD plated shock bodies with 7/8" diameter shaft
• FK rod end bearings for extended longevity and minimal deflection
• Fully rebuildable and re-tunable
• 100% Bolt-on - no drilling, cutting or welding necessary for installation

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2.5 VS HEAVY RATE REAR COILOVERS WITH REMOTE RESERVOIRS

 

• 48711    21-23 BRONCO REAR 2.5 VS RR COILOVER KIT HEAVY RATE SPRING

KEY FEATURES: 

• Increased wheel travel and ride quality over stock
• Vehicle specific tuned for superior shock damping and control
• Heavy Rate dual rate coil spring engineered by ICON for heavier load-outs
• Remote reservoirs maintain cooler operating temperatures during extended off-road use
• Adjustable up to 2-3" of rear lift height on non-Sasquatch or 1.25-2.25” of rear lift on Sasquatch Broncos
• 6061 Aircraft grade aluminum CNC machined components
• Corrosion resistant CAD plated shock bodies with 7/8" diameter shaft
• FK rod end bearings for extended longevity and minimal deflection
• Fully rebuildable and re-tunable
• 100% Bolt-on - no drilling, cutting or welding necessary for installation

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2.5 VS HEAVY RATE REAR COILOVERS WITH CDCV

• 48711C   21-23 BRONCO REAR 2.5 VS RR CDCV COILOVER KIT HEAVY RATE SPRING

KEY FEATURES: 

• Increased wheel travel and ride quality over stock
• Vehicle specific tuned for superior shock damping and control
• Heavy Rate dual rate coil spring engineered by ICON for heavier load-outs
• Remote reservoirs maintain cooler operating temperatures during extended off-road use
• ICON CDCV equipped for 10 settings of external compression damping adjustment
• Adjustable up to 2-3" of rear lift height on non-Sasquatch or 1.25-2.25” of rear lift on Sasquatch Broncos
• 6061 Aircraft grade aluminum CNC machined components
• Corrosion resistant CAD plated shock bodies with 7/8" diameter shaft
• FK rod end bearings for extended longevity and minimal deflection
• Fully rebuildable and re-tunable
• 100% Bolt-on - no drilling, cutting or welding necessary for installation

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2.5 VS HEAVY RATE REAR COILOVERS WITH CDEV

• 48711E    21-23 BRONCO REAR 2.5 VS RR CDEV COILOVER KIT HEAVY RATE SPRING?

KEY FEATURES: 

• Increased wheel travel and ride quality over stock
• Vehicle specific tuned for superior shock damping and control
• Heavy Rate dual rate coil spring engineered by ICON for heavier load-outs
• Remote reservoirs maintain cooler operating temperatures during extended off-road use
• ICON's CDE Valve technology allows for in vehicle adjustment of compression damping settings and active adjustment via the ICON Intelligent Control (IIC)
• ICON Intelligent Control (IIC) uses onboard sensors to monitor G-forces and movement of vehicle chassis along with user defined settings to actively make near instantaneous compression damping changes
• Adjustable up to 2-3" of rear lift height on non-Sasquatch or 1.25-2.25” of rear lift on Sasquatch Broncos
• Unique ICON engineered triple rate coil springs
• 6061 Aircraft grade aluminum CNC machined components
• Corrosion resistant CAD plated shock bodies with 7/8" diameter shaft
• FK rod end bearings for extended longevity and minimal deflection
• Fully rebuildable and re-tunable
• 100% Bolt-on - no drilling, cutting or welding necessary for installation

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COMPLETE BRONCO SUSPENSION SYSTEMS WITH HEAVY RATE REAR COILOVERS

ICON is also offering each version of our Bronco Complete Coilover Suspension Systems, Stages 3 through 8, in a variation that includes the Heavy Rate Rear Coilovers. If you are already familiar with these suspension systems, simply add an "X" to the end of the suspension system's Kit Number (or "K" number as we call them at ICON), and that will denote the kit comes with the Heavy Rate rear coilovers. You may choose to set up your website eCommerce systems with the Heavy Rate rear coilover option rather than creating a whole new product listing for each of these variants. In case you do choose to create new listings for each Stage, we have included all of the "Kit Images" in the downloadable Images file. Note that they are identical to the normal rate versions of the kit images; only the file names are different to denote the K***X kit number.

A complete list of Heavy Rate Suspension System Stages, along with the included components for each kit, is contained in the Price & Spec Sheet downloadable file. For quick reference, they are also listed below:

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STAGE 3 WITH X-RATE REAR COILOVERS

 

K40003TX  21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM TUBULAR HEAVY RATE

• 48600         21-23 BRONCO FRONT 2.5 VS IR COILOVER KIT
• 48400DJ    21-23 BRONCO TUBULAR UCA DJ PRO KIT
• 48613         21-23 BRONCO REAR 2.5 VS IR COILOVER KIT HEAVY RATE SPRING

K40003X    21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM BILLET HEAVY RATE

• 48600         21-23 BRONCO FRONT 2.5 VS IR COILOVER KIT
• 48500DJ     21-23 BRONCO BILLET UCA DJ PRO KIT
• 48613         21-23 BRONCO REAR 2.5 VS IR COILOVER KIT HEAVY RATE SPRING

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STAGE 4 WITH X-RATE REAR COILOVERS

 

K40004TX  21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 4 SUSPENSION SYSTEM TUBULAR HEAVY RATE

• 48700        21-23 BRONCO FRONT 2.5 VS RR COILOVER KIT
• 48400DJ   21-23 BRONCO TUBULAR UCA DJ PRO KIT
• 611072      21-23 BRONCO HOSE ROUTE KIT OEM REAR LINK 1.9"
• 48711        21-23 BRONCO REAR 2.5 VS RR COILOVER KIT HEAVY RATE SPRING

K40004X    21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 4 SUSPENSION SYSTEM BILLET HEAVY RATE

• 48700         21-23 BRONCO FRONT 2.5 VS RR COILOVER KIT
• 48500DJ    21-23 BRONCO BILLET UCA DJ PRO KIT
• 611072       21-23 BRONCO HOSE ROUTE KIT OEM REAR LINK 1.9"
• 48711         21-23 BRONCO REAR 2.5 VS RR COILOVER KIT HEAVY RATE SPRING

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STAGE 5 WITH X-RATE REAR COILOVERS

K40005TX  21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 5 SUSPENSION SYSTEM TUBULAR HEAVY RATE

• 48700       21-23 BRONCO FRONT 2.5 VS RR COILOVER KIT
• 48400DJ  21-23 BRONCO TUBULAR UCA DJ PRO KIT
• 44000T     21-23 BRONCO TUBULAR REAR LOWER LINK KIT
• 611073     21-23 BRONCO HOSE ROUTE KIT REAR LINK 1.75"
• 48711       21-23 BRONCO REAR 2.5 VS RR COILOVER KIT HEAVY RATE SPRING

K40005X    21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 5 SUSPENSION SYSTEM BILLET HEAVY RATE

• 48700         21-23 BRONCO FRONT 2.5 VS RR COILOVER KIT
• 48500DJ    21-23 BRONCO BILLET UCA DJ PRO KIT
• 44000        21-23 BRONCO BILLET REAR LOWER LINK KIT
• 48711        21-23 BRONCO REAR 2.5 VS RR COILOVER KIT HEAVY RATE SPRING

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STAGE 6 WITH X-RATE REAR COILOVERS

K40006TX  21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 6 SUSPENSION SYSTEM TUBULAR HEAVY RATE

• 48700C      21-23 BRONCO FRONT 2.5 VS RR CDCV COILOVER KIT
• 48400DJ    21-23 BRONCO TUBULAR UCA DJ PRO KIT
• 44000T      21-23 BRONCO TUBULAR REAR LOWER LINK KIT
• 611073       21-23 BRONCO HOSE ROUTE KIT REAR LINK 1.75"
• 48711C      21-23 BRONCO REAR 2.5 VS RR CDCV COILOVER KIT HEAVY RATE SPRING

K40006X    21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 6 SUSPENSION SYSTEM BILLET HEAVY RATE

• 48700C     21-23 BRONCO FRONT 2.5 VS RR CDCV COILOVER KIT
• 48500DJ   21-23 BRONCO BILLET UCA DJ PRO KIT
• 44000        21-23 BRONCO BILLET REAR LOWER LINK KIT
• 48711C      21-23 BRONCO REAR 2.5 VS RR CDCV COILOVER KIT HEAVY RATE SPRING

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