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 an X-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 |
- 2020-chevrolet-silverado-2500-hd-custom-esi5994393
- 2020-chevrolet-silverado-2500-hd-high-country-esi3230204
- 2020-chevrolet-silverado-2500-hd-lt-esi4038235
- 2020-chevrolet-silverado-2500-hd-ltz-esi7359572
- 2020-chevrolet-silverado-2500-hd-wt-esi1119357
- 2020-chevrolet-silverado-3500-hd-high-country-esi6717540
- 2020-chevrolet-silverado-3500-hd-lt-esi7031981
- 2020-chevrolet-silverado-3500-hd-ltz-esi8665273
- 2020-chevrolet-silverado-3500-hd-wt-esi7698190
- 2020-gmc-sierra-2500-hd-at4-esi2780719
- 2020-gmc-sierra-2500-hd-base-esi9066811
- 2020-gmc-sierra-2500-hd-denali-esi2868938
- 2020-gmc-sierra-2500-hd-sle-esi3716408
- 2020-gmc-sierra-2500-hd-slt-esi4037115
- 2020-gmc-sierra-3500-hd-at4-esi9093075
- 2020-gmc-sierra-3500-hd-base-esi2664551
- 2020-gmc-sierra-3500-hd-denali-esi2824801
- 2020-gmc-sierra-3500-hd-sle-esi6896123
- 2020-gmc-sierra-3500-hd-slt-esi4046471
- 2021-chevrolet-silverado-2500-hd-custom-esi4489288
- 2021-chevrolet-silverado-2500-hd-high-country-esi1661908
- 2021-chevrolet-silverado-2500-hd-lt-esi3657938
- 2021-chevrolet-silverado-2500-hd-ltz-esi7524717
- 2021-chevrolet-silverado-2500-hd-wt-esi7318417
- 2021-chevrolet-silverado-3500-hd-high-country-esi9027184
- 2021-chevrolet-silverado-3500-hd-lt-esi3805550
- 2021-chevrolet-silverado-3500-hd-ltz-esi5318238
- 2021-chevrolet-silverado-3500-hd-wt-esi8489555
- 2021-gmc-sierra-2500-hd-at4-esi3570475
- 2021-gmc-sierra-2500-hd-base-esi6647731
- 2021-gmc-sierra-2500-hd-denali-esi9642217
- 2021-gmc-sierra-2500-hd-sle-esi9568928
- 2021-gmc-sierra-2500-hd-slt-esi5865326
- 2021-gmc-sierra-3500-hd-at4-esi6025975
- 2021-gmc-sierra-3500-hd-base-esi7527935
- 2021-gmc-sierra-3500-hd-denali-esi7648834
- 2021-gmc-sierra-3500-hd-sle-esi7201229
- 2021-gmc-sierra-3500-hd-slt-esi9059170
- 2022-chevrolet-silverado-2500-hd-custom-esi1970350
- 2022-chevrolet-silverado-2500-hd-high-country-esi1578438
- 2022-chevrolet-silverado-2500-hd-lt-esi4618703
- 2022-chevrolet-silverado-2500-hd-ltz-esi8673454
- 2022-chevrolet-silverado-2500-hd-wt-esi4736263
- 2022-chevrolet-silverado-3500-hd-high-country-esi7601431
- 2022-chevrolet-silverado-3500-hd-lt-esi4119678
- 2022-chevrolet-silverado-3500-hd-ltz-esi5968383
- 2022-chevrolet-silverado-3500-hd-wt-esi5725248
- 2022-gmc-sierra-2500-hd-at4-esi7588342
- 2022-gmc-sierra-2500-hd-denali-esi7835945
- 2022-gmc-sierra-2500-hd-pro-esi1442429
- 2022-gmc-sierra-2500-hd-sle-esi8908245
- 2022-gmc-sierra-2500-hd-slt-esi9396662
- 2022-gmc-sierra-3500-hd-at4-esi8089207
- 2022-gmc-sierra-3500-hd-denali-esi8994738
- 2022-gmc-sierra-3500-hd-pro-esi5106615
- 2022-gmc-sierra-3500-hd-sle-esi3702489
- 2022-gmc-sierra-3500-hd-slt-esi2593056
- ClearanceItem:N
- EPA:N/A
- Exhaust- Mufflers & Tips>Headers & Manifolds
- fits_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
- fits_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
- fits_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
- fits_2022`GMC`Sierra 3500 HD`Pro~2020-2022`GMC`Sierra 3500 HD`SLE~2020-2022`GMC`Sierra 3500 HD`SLT
- LTL:N
- MPN:CT220HCAT
- Non-CARB:Y
- Prop65:Y
- SpecialOrder:Y