4" (4” +2”) Big Lift Kit - 2025 GM Silverado/Sierra 1500 ZR2 / AT4X
With thousands of engineering and development hours and more awesome features than we could possibly mention, these are the best lift kits available on 2025 GM 1500 ZR2/ZT4X trucks!
- 4” (4” + 2”) kit yields 6” of total lift with factory 2” lift and ReadyLIFT’s 4” lift
- Delivers clearance for increased aftermarket tire sizes - up to 35x12.50 on 6-inch kit on 9" wide wheels with 0 offsets with no trimming -18 offset will require minor trimming.
- The proprietary lower strut clamshell design maintains factory geometry and retains the use of the factory strut.
- 3/16-inch-thick steel plate cross members and skid plate.
- Anti-torsion boxed and gusseted plate steel differential drop brackets.
- Includes ReadyGuard Powertrain Warranty.
- NOTES: Use of Auto 4 Hi feature not recommended. Not compatible with rear mono-leaf springs.
Application Summary:
| Year |
Make/Model |
| 2025 |
Chevrolet Silverado 1500 |
| 2025 |
GMC Sierra 1500 |
| Attributes |
| California Proposition 65 |
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Color |
Black, Black |
| Country of Origin (Primary) |
TW |
| Fitment |
Direct Fitment, Direct Fitment |
| Front Lift Component |
Strurt with Crossmember, Strurt with Crossmember |
| Front or Rear |
Front and Rear, Front and Rear |
| GTIN |
00194933404681 |
| Harmonized Tariff Code (Schedule B) |
8708801600 |
| Hazardous Material Code |
N |
| Install Difficulty |
Difficult Requires Professional Installation, Difficult Requires Professional Installation |
| Installation Time |
5+ Hours, 5+ Hours |
| Life Cycle Status Code |
Available to Order |
| Lift/Drop Height |
4 in. |
| Material |
Steel, Steel |
| Max Tire Size |
35 Inch, 35 Inch |
| NAFTA Preference Criterion Code |
B |
| Rear Lift Component |
Block and U-bolt, Block and U-bolt |
| Rear Lift Height |
5 Inches, 5 Inches |
| SDR Required Flag |
N |
| Shocks Included |
No |
