4-Inch Rear Leaf Springs for Ford Super Duty 4WD (1999–2004)
- Fits 1999–2004 Ford F-250 / F-250 Super Duty / F-350 Super Duty 4WD — see the fitment list for submodels
- For trucks already set up with 4 inches of suspension lift only
- Kit contents: 2x 4-inch rear leaf springs plus 1x universal U-bolt kit
- Bushings come with the springs; bolt-on installation, estimated 1-2 hours
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Will it fit your truck?
✓ Fits
ONLY for models with 4" of suspension lift. Fitment on this page is based on the manufacturer’s application data.
About this kit
4-Inch Rear Leaf Springs, fitment-checked
Rough Country 8066Kit is a pair of 4-inch rear leaf springs for 1999–2004 Ford F-250 and F-350 Super Duty 4WD trucks. Bushings come with the springs, and a universal U-bolt kit is packed alongside them. These springs are intended only for trucks already running 4 inches of suspension lift.
These 4-inch rear leaf springs fit 1999–2004 Ford F-250 and F-350 Super Duty 4WD trucks, covering XL, XLT, Lariat, King Ranch, and Harley-Davidson Edition submodels listed in the fitment section. Confirm your truck already carries 4 inches of suspension lift before ordering, since that is the only application these springs are built for. Both springs ship together with bushings and a universal U-bolt kit, so the rear axle can be re-clamped as part of the same job. Rough Country lists the work as a bolt-on swap, with an estimated install time of 1-2 hours.
What’s in the box
Kit contents
- 2× 4in Rear Leaf Spring 8066
- 1× Universal U-Bolt Kit 7617
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 8066Kit kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 8066Kit |
| UPC / GTIN | 00840269908835 |
| Lift height | 4 in |
| Shipping weight | 162.92 lb |
| Country of origin | ID |
| Category | Suspension & Lift Kits › Springs |
Why buy here