4-Inch Lift Kit with N3 Shocks for 2016–2021 Toyota Tundra 4WD
- Fits 2016–2021 Toyota Tundra 4WD — does not fit Pro Series or XSP-X models
- Requires 18-inch or larger wheels; tires no wider than 11.5 inches with stock wheels
- Kit contents: 4.5-inch loaded strut pair, crossmember box, 4-6 knuckles, N3 shock pair
- High-clearance crossmember; no changes needed to stock differential mounts, drivetrain, or exhaust
- Cutting and drilling required — downloadable installation guide available
The Trail Fortress check
Will it fit your truck?
✓ Fits
✕ Does not fit
- Pro Series models Does NOT fit XSP-X models
Cutting and drilling is required. Requires 18-inch or larger wheels. Stock 18-inch or larger wheels can be used but can accommodate tires no wider than 11.5-inch. In some cases minor trimming may be needed to clear 35-inch tires. On vehicles equipped with a two piece driveshaft there is the potential for take off vibration this can be corrected with SKU: 1776BOX1 carrier bearing shim kit. Please view instructions for complete information on proper tire / wheel combinations. 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 75131 is a 4-inch lift kit for the 2016–2021 Toyota Tundra 4WD, built around a high-clearance crossmember, loaded struts, 4-6 knuckles, and an N3 shock pair. Cutting and drilling are part of the job. It does not fit Pro Series or XSP-X trucks, and wheels must measure 18 inches or larger.
This 4-inch lift kit for the 2016–2021 Toyota Tundra 4WD covers SR, SR5, Limited, Platinum, Trail, Nightshade, and 1794 Edition trims listed in the fitment section, and evens out the factory rake front to rear. The box carries a 4.5-inch loaded strut pair, crossmember hardware, 4-6 knuckles, and an N3 shock pair, with fabricated rear blocks. Factory 18-inch or larger wheels work, though tire width tops out at 11.5 inches and 35-inch tires may call for light trimming. Two-piece driveshaft trucks can show take-off vibration, addressable with carrier bearing shim kit 1776BOX1. A downloadable installation guide is available.
What’s in the box
Kit contents
- 1× Up 4in Kit Box 751BOX1
- 1× Loaded Strut Pair 501099
- 1× Crossmember Box 752BOX3
- 1× 4-6 Knuckles 1773BOX1
- 1× N3 Shock Pair 23208
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 75131 kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 75131 |
| UPC / GTIN | 00843030199272 |
| Lift height | 4 in |
| Shock package | N3 series |
| Shipping weight | 225 lb |
| Country of origin | US |
| Category | Suspension & Lift Kits › Lift Kits |
| Installation guide | Downloadable PDF |
Why buy here