Fabtech's new 4" crossmember systems utilize their proven heavy duty construction and design features for a robust suspension upgrade. The 4" system features high arched lower control arm crossmembers constructed of 1/4" thick steel for maximum strength. The Fabtech ductile iron steering knuckles retain the near stock track width keeping tires under the fender for a clean appearance. Rear lift is accomplished with a block and u bolt configuration.
This Part Fits:
| Year |
Make |
Model |
Submodel |
| 2018 |
Chevrolet |
Silverado 2500 HD |
High Country |
| 2018 |
Chevrolet |
Silverado 2500 HD |
LT |
| 2018 |
Chevrolet |
Silverado 2500 HD |
LTZ |
| 2018 |
Chevrolet |
Silverado 2500 HD |
WT |
| 2015-2019 |
Chevrolet |
Silverado 3500 HD |
High Country |
| 2011-2019 |
Chevrolet |
Silverado 3500 HD |
LT |
| 2011-2019 |
Chevrolet |
Silverado 3500 HD |
LTZ |
| 2011-2019 |
Chevrolet |
Silverado 3500 HD |
WT |
| 2018 |
GMC |
Sierra 2500 HD |
Base |
| 2018 |
GMC |
Sierra 2500 HD |
Denali |
| 2018 |
GMC |
Sierra 2500 HD |
SLE |
| 2018 |
GMC |
Sierra 2500 HD |
SLT |
| 2015-2018 |
GMC |
Sierra 3500 HD |
Base |
| 2011-2018 |
GMC |
Sierra 3500 HD |
Denali |
| 2011-2018 |
GMC |
Sierra 3500 HD |
SLE |
| 2011-2018 |
GMC |
Sierra 3500 HD |
SLT |
| 2011-2014 |
GMC |
Sierra 3500 HD |
WT |
