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Carry More Weight Without Sacrificing Ride Height
Adding a winch, bumper, or rear cargo weight to your Bronco can sag the factory rear springs over time. The Fox 803-04-047 HD Spring Kit uses a 22 percent higher spring rate than Fox production springs to increase static load capacity by up to 500 lbs over the rear axle while maintaining ride height.
Key Features
- Fox 803-04-047 Heavy Duty rear spring kit, black finish
- Increases static load capacity by up to 500 lbs over the rear axle
- 22 percent higher spring rate than Fox production springs
- High tensile chrome silicon steel construction
- E-coated and top coated with powder coat for corrosion resistance
- Compatible with Fox Performance Elite and Factory Race Series coilover kits
Fitment
| Year Range | Make | Model |
|---|---|---|
| 2021-2024 | Ford | Bronco |
Specifications
| Detail | Value |
|---|---|
| Brand | Fox |
| MPN | 803-04-047 |
| UPC | 692878900041 |
| Position | Rear |
| Finish | Black |
| Load Capacity Increase | Up to 500 lbs over rear axle |
| Spring Rate | 22% higher than Fox production springs |
| Material | High tensile chrome silicon steel |
What's Included
- 2 Fox HD rear coil springs, black finish
About Fox
Fox Factory has designed and manufactured performance suspension products for off-road trucks, UTVs, and powersports applications for decades, supplying both aftermarket shocks and factory-fit suspension for leading vehicle brands including Ford's Bronco lineup.
FAQ
What is the 803-04-047?The 803-04-047 is a Fox Heavy Duty rear spring kit in black finish for the 2021-2024 Ford Bronco, designed to increase static load capacity by up to 500 lbs over the rear axle.
Does this kit fit the Bronco Raptor?No, this spring kit excludes the Bronco Raptor submodel.
Will this spring kit change my ride height?These springs are designed to maintain your existing ride height while adding load capacity, rather than lifting the vehicle further.
Can I install this kit with my factory shocks?This kit is designed to work seamlessly with Fox Performance Elite and Factory Race Series coilover kits.
What is the spring rate increase compared to stock Fox springs?The 803-04-047 has a 22 percent higher spring rate compared to standard Fox production springs.
What is this kit made from?The springs are made from high tensile chrome silicon steel, e-coated and top coated with powder coat for corrosion resistance.
How many springs come in this kit?This kit includes 2 rear springs, enough for both sides of the rear axle.
Is this kit only for the rear of the vehicle?Yes, the 803-04-047 is a rear-position spring kit only.
Install Instructions
- Support the vehicle on jack stands and remove the rear wheels.
- Support the rear axle and relieve tension on the factory or existing rear coilover assembly.
- Remove the rear coilover or spring assembly following the shock manufacturer's service procedure.
- Replace the existing rear spring with the Fox HD spring, matching orientation to the factory unit.
- Reinstall the coilover assembly and torque all hardware to manufacturer specifications.
- Lower the vehicle and verify ride height before returning to normal use.
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