ICON Heavy Rate Rear Coil Springs (for ICON Coilovers)

[Dusty at ICON]

ICON Vehicle Dynamics introduces our Heavy Rate Rear Coilover Springs 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, or as "Heavy Rate" versions of our assembled Coilovers and Complete Suspension Systems.

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.

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 replacment Heavy Rate coil springs.

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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ICON Heavy Rate Rear Coils are also available in Heavy Rate versions of our pre-assembled rear coilovers as well as our Complete Suspension System "Stage" kits featuring the Heavy Rate rears. See the following posts for more information about those.

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[Dusty at ICON]

Each of our ICON Rear Coilover variants are also now available in a Heavy Rate version, from our Internal Reservoir variant all the way up to the CDEV variant. For a more thorough discussion of each coilover variant with features and benefits please check out our Front & Rear Coilovers thread.

2.5 VS HEAVY RATE REAR COILOVERS WITH INTERNAL RESERVOIRS

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

2.5 VS HEAVY RATE REAR COILOVERS WITH REMOTE RESERVOIRS

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

2.5 VS HEAVY RATE REAR COILOVERS WITH CDCV

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

2.5 VS HEAVY RATE REAR COILOVERS WITH CDEV

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

 

[Dusty at ICON]

We've also configured Heavy Rate versions of each of our complete suspension system "Stage" kits. For a more thorough explanation of what each "Stage" includes, with features and benefits of each, please check out our Complete Coilover Suspension Systems thread.

STAGE 3 WITH HEAVY RATE REAR COILOVERS

K40003TX 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM TUBULAR HEAVY RATE
K40003X 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM BILLETHEAVY RATE​

STAGE 4 WITTH HEAVY RATE COILOVERS

K40004TX 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM TUBULAR HEAVY RATE
K40004X 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM BILLET HEAVY RATE
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STAGE 5 WITTH HEAVY RATE COILOVERS

K40005TX 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM TUBULAR HEAVY RATE
K40005X 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM BILLET HEAVY RATE
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STAGE 6 WITTH HEAVY RATE COILOVERS

K40006TX 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM TUBULAR HEAVY RATE
K40006X 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM BILLET HEAVY RATE
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STAGE 7 WITTH HEAVY RATE COILOVERS

K40007TX 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM TUBULAR HEAVY RATE
K40007X 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM BILLET HEAVY RATE
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STAGE 8 WITTH HEAVY RATE COILOVERS

K40008TX 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM TUBULAR HEAVY RATE
K40008X 21-23 BRONCO NON-SASQ 3-4" LIFT STAGE 3 SUSPENSION SYSTEM BILLET HEAVY RATE​

 

[Snacktime]

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.

I call BS! Go retake the picture with the windows down so we can see who got stuck in the back!

 

[smoot618]

@Dusty at ICON

When will these be in stock? Been checking last few months for a stage 4 heavy rate kit but haven't been in stock.

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