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The ICON Vehicle Dynamics Heavy Rate Rear Coil Spring Kit is a dual rate coil spring kit that provides extra weight capacity for those who frequently load out the rear of their Broncos with extra gear and equipment while maintaining excellent on- and off-road performance characteristics. The Heavy Rate Coil Spring Kit simply includes the replacement Heavy Rate coil springs used to retrofit existing ICON Rear Coilovers to the Heavy Rate specification. This Heavy Rate Coil Spring Kit is a perfect all-around rear coil spring for those who either keep their Broncos heavily loaded full time, or only for occasional expeditions yet want to maintain the best possible performance across various load-out scenarios with taller ride heights under load compared to the standard ICON triple rate Bronco rear coil springs.
The ICON Heavy Rate Coil Spring Kit is a dual rate coil spring kit that provides extra weight capacity for those who frequently load out their Broncos with extra gear and equipment while maintaining excellent performance characteristics.
21-26 BRONCO HEAVY RATE REAR COIL KIT
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It is listed for: 2021-2026 Ford Bronco; 2025-2026 Ford Bronco; 2021-2023 Ford Bronco and more (see the full list above). Pick your vehicle on this page to check your exact year and trim.
The maker's installation guide is on this page — see Installation guide under the part details for the step-by-step and the torque figures. Work on level ground with the car properly supported, and torque every fastener to the maker's figure. If the job is beyond your tools, any shop that does this kind of work can fit it.
Yes. Any change in ride height changes the alignment; set it once the kit is on and the truck has been driven a short distance.
The maker states the largest tire the kit is designed to clear; going larger can need trimming or more lift. Wider wheels with less backspacing also change what clears.
Taller lifts change the angles of the driveshaft and CV joints, and kits made for that height include the parts to correct them when needed. A leveling kit that raises the front a small amount usually does not.
A leveling kit raises the front to match the rear and keeps the stock springs and shocks, so the ride stays close to stock. Larger lifts with new springs change the ride more.
Some kits reuse the stock shocks and some include or call for longer ones; the Part details and the maker's guide on this page say which.
Trucks with headlight leveling, adaptive cruise or a forward camera may need those systems re-aimed after the height changes.
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LOW STOCK (2 kits)