Upgrade to Long Tube headers on your 2020-21 Chevy Silverado or GMC Sierra HD with this system from Stainless Works. Unleash that 6.6L motor with 2" primaries that flow into a 3" collector with an integrated merge spike. This system comes with high flow cats and a Y-pipe for a simple bolt-on install.
This Part Fits:
| Year |
Make |
Model |
Submodel |
| 2020-2022 |
Chevrolet |
Silverado 2500 HD |
Custom |
| 2020-2022 |
Chevrolet |
Silverado 2500 HD |
High Country |
| 2020-2022 |
Chevrolet |
Silverado 2500 HD |
LT |
| 2020-2022 |
Chevrolet |
Silverado 2500 HD |
LTZ |
| 2020-2022 |
Chevrolet |
Silverado 2500 HD |
WT |
| 2020-2022 |
Chevrolet |
Silverado 3500 HD |
High Country |
| 2020-2022 |
Chevrolet |
Silverado 3500 HD |
LT |
| 2020-2022 |
Chevrolet |
Silverado 3500 HD |
LTZ |
| 2020-2022 |
Chevrolet |
Silverado 3500 HD |
WT |
| 2020-2022 |
GMC |
Sierra 2500 HD |
AT4 |
| 2020-2021 |
GMC |
Sierra 2500 HD |
Base |
| 2020-2022 |
GMC |
Sierra 2500 HD |
Denali |
| 2022 |
GMC |
Sierra 2500 HD |
Pro |
| 2020-2022 |
GMC |
Sierra 2500 HD |
SLE |
| 2020-2022 |
GMC |
Sierra 2500 HD |
SLT |
| 2020-2022 |
GMC |
Sierra 3500 HD |
AT4 |
| 2020-2021 |
GMC |
Sierra 3500 HD |
Base |
| 2020-2022 |
GMC |
Sierra 3500 HD |
Denali |
| 2022 |
GMC |
Sierra 3500 HD |
Pro |
| 2020-2022 |
GMC |
Sierra 3500 HD |
SLE |
| 2020-2022 |
GMC |
Sierra 3500 HD |
SLT |