6-Inch Lift Kit with N3 Shocks for F-250 Super Duty (2011–2014)
- Fits 2011–2014 Ford F-250 Super Duty 4WD — King Ranch, Lariat, Platinum, XL, and XLT
- Does not fit F-350, dually, or gas-engine models; requires rear factory contact overload springs
- Kit contents: 6in D-Coils, N3 shock kit, two radius arm upgrade boxes, block and U-bolt kit, diesel kit box
- Replacement radius arms hold factory angles and add an adjustable cam at the axle for caster
- Bolt-on installation — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Dually models
- Gas engine models
Does NOT F-350 models. ONLY fits models equipped with rear factory contact overload springs Fitment on this page is based on the manufacturer’s application data.
About this kit
6-Inch Lift Kit with N3 Shocks, fitment-checked
Rough Country 540.20 is a 6-inch lift kit for the 2011–2014 Ford F-250 Super Duty 4WD in King Ranch, Lariat, Platinum, XL, and XLT trims. The kit pairs coil springs with N3 shocks, replacement radius arms, and fabricated rear blocks with U-bolts. It does not fit F-350, dually, or gas-engine trucks, and the truck must have factory contact overload springs at the rear.
This 6-inch lift kit for the 2011–2014 Ford F-250 Super Duty 4WD ships as a diesel-specific package: front D-Coils, an N3 shock set, a rear block and U-bolt kit sized for factory overload springs, and two radius arm boxes with rubber-bushed arms plus an axle-end alignment cam for caster correction. Rough Country calls out bolt-on installation, and a downloadable installation guide is available before you start. Confirm the truck is a single-rear-wheel diesel F-250 with rear factory contact overload springs, since F-350, dually, and gas models are excluded. Shipping weight: 246.0 lb.
What’s in the box
Kit contents
- 1× Diesel Kit Box 1540BOX1
- 1× Block U-Bolt Kitoverloads 1564BOX3
- 1× N3 Shock Kit 158030
- 1× 6in D-Coil 9295
- 1× Radius Arm Upgrade Box 53600991A
- 1× Radius Arm Upgrade Box 53600992A
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 540.20 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 540.20 |
| UPC / GTIN | 00843030127718 |
| Lift height | 6 in |
| Shock package | N3 series |
| Shipping weight | 246 lb |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here