4-Inch Lift Kit with N3 Shocks for Dodge W-Series 4WD (1977-1993) — Part 311.20
- Fits 1977-1993 Dodge W150, W200, W250, and W350 4WD — see the full fitment list
- Dana 60 front axle required; Cummins diesel models are not covered
- Kit contents: 4in front leaf springs, 3 inch rear lift blocks, Dana 60 steering block, spring bushing and sleeve kit, U-bolts, install hardware
- Two N3 shock pairs included for the lifted ride height
- Install time listed at 6 - 8 hours — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Models with Cummins diesel engine
ONLY fits models with Dana 60 front axle. Fitment on this page is based on the manufacturer’s application data.
About this kit
4-Inch Lift Kit with N3 Shocks, fitment-checked
Rough Country 311.20 is a 4-inch lift kit for 1977-1993 Dodge W-Series 4WD trucks, built around lifted front leaf springs, 3-inch rear lift blocks, and two N3 shock pairs. It fits only trucks equipped with the Dana 60 front axle and does not fit Cummins diesel models. Confirm your axle before ordering.
This 4-inch lift kit for the 1977-1993 Dodge W-Series 4WD covers W150, W200, W250, and W350 applications listed in the fitment section. The front package uses lifted leaf springs, a Dana 60 steering block, U-bolts, and hardware, while the rear runs 3-inch lift blocks with matching U-bolts. Two N3 shock pairs handle damping at the new ride height. Two hard qualifiers apply: Dana 60 front axle only, and no Cummins diesel models. Rough Country lists an install window of 6 - 8 hours, and a downloadable installation guide is available before you start.
What’s in the box
Kit contents
- 1× Lift Block Kit 6594
- 1× Sprg. Bush & Slv Kit 6072
- 1× Installation Kit 7520
- 1× Universal U-Bolt Kit 7603
- 2× 4in Front Leaf Spring 8003
- 1× Steering Block 6608
- 1× N3 Shock Pair 23275
- 1× N3 Shock Pair 23276
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 311.20 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 311.20 |
| UPC / GTIN | 00843030127909 |
| Lift height | 4 in |
| Shock package | N3 series |
| Shipping weight | 150 lb |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
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