6-Inch Lift Kit with N3 Shocks for 2005–2007 Super Duty 4WD
- Fits 2005–2007 Ford F-250 and F-350 Super Duty 4WD, XL through Harley-Davidson Edition
- Excludes diesel-engine trucks, dually models, and trucks with rear overload springs
- Includes application-valved N3 series shock absorbers front and rear
- Bolt-on install; exhaust modification needed for front driveshaft clearance
- 3-inch rear block and U-bolt kit plus add-a-leaf included with the 6-inch coil box
- Downloadable installation guide available. Shipping weight: 257.85 lb
Will it fit your truck?
✓ Fits
✕ Does not fit
- Diesel engine models
- Dually models
Does NOT models with rear overload springs. Requires exhaust modification to clear the front driveshaft. Fitment on this page is based on the manufacturer’s application data.
6-Inch Lift Kit with N3 Shocks, fitment-checked
Rough Country 578.20 is a 6-inch lift kit for gas-engine 2005–2007 Ford F-250 and F-350 Super Duty 4WD trucks, built around application-valved N3 series shocks. It bolts on without cutting, though the exhaust has to be modified for front driveshaft clearance. Diesel models, dually models, and trucks with rear overload springs are outside the fitment.
N3 shocks set this 6-inch lift kit apart for the 2005–2007 Ford Super Duty 4WD, and the rest of the box backs them up: a 6-inch coil box, upper radius arm drop bracket kit, lower arms, an add-a-leaf, and a 3-inch block and U-bolt kit for the rear. Fitment spans F-250 and F-350 Super Duty 4WD in XL, XLT, Lariat, King Ranch, and Harley-Davidson Edition trim. The drop brackets keep caster where it belongs, so the truck still steers like it should. Verify your engine and rear spring setup, then follow the downloadable Rough Country installation guide.
Kit contents
- 1× 3 Inch Block & U-Bolt Kit 6539$89.95
- 1× Add-A-Leaf 6111
- 1× 6in Up Arm Kit 1580 BOX 1
- 1× 6in Lower Arms 1580 BOX 2
- 1× 6 Inch Coil Box 9296
- 1× Kit Box 1580 BOX 3
- 1× N3 Shock Kit 158030
Priced components are sold separately here, so a worn shock or arm can be replaced on its own later.
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 578.20 kit fits the vehicles shown in the fitment section above.
Specifications
| Brand | Rough Country |
| Part number | 578.20 |
| UPC / GTIN | 00843030127244 |
| Lift height | 6 in |
| Shock package | N3 series |
| Shipping weight | 257.85 lb |
| Category | Suspension & Lift Kits › Lift Kits |
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