Flowmaster introduces our FlowFX Extreme stainless steel cat-back exhaust system for the 2019*-2023 (* 2019 New Body Only) Chevrolet/GMC Silverado/Sierra 1500 with the 5.3L engine. This system uses a FlowFX series muffler for an aggressive to moderate sound level and increased performance. 3.00-inch mandrel bent 409 stainless steel tubing allows for maximum exhaust flow and durability. The system has a turndown style, dump exit right after the muffler to eliminate the over-axle tailpipe. This elimination of the tailpipe helps improve ground clearance and departure angle when you are driving in more extreme off-road situations. This system produced max dyno gains of 15 hp and 20 lb-ft at the rear wheels. All of the necessary hardware is included, and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.
Features:
- FlowFX Series performance muffler offers an aggressive to moderate sound level and increased performance
- 409 stainless steel construction delivers extra durability and improved long-term corrosion resistance
- Max dyno gains of 15 hp and 20 lb-ft at the rear wheels
- 3.00-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better power
- Includes all necessary hardware for an at home installation
- Dump style exit allows for better ground clearance when in extreme off-road conditions
- Uses factory hanger locations for easy installation
- Lifetime Limited Warranty
About Flowmaster
Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
| Make |
Model |
Submodel |
Years |
Engine |
| Chevrolet |
Silverado 1500 LTD |
High Country |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 LTD |
LT Trail Boss |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 LTD |
LTZ |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 LTD |
LT |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 LTD |
RST |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 LTD |
SSV |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 LTD |
WT |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
Custom Trail Boss |
2019 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
Custom Trail Boss |
2020 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
Custom Trail Boss |
2021 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
Custom Trail Boss |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
Custom Trail Boss |
2023 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
Custom |
2019 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
Custom |
2020 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
Custom |
2021 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
Custom |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
High Country |
2019 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
High Country |
2020 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
High Country |
2021 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
High Country |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
High Country |
2023 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT Trail Boss |
2019 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT Trail Boss |
2020 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT Trail Boss |
2021 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT Trail Boss |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT Trail Boss |
2023 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2019 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2020 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2021 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LTZ |
2023 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT |
2019 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT |
2020 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT |
2021 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
LT |
2023 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
PPV |
2023 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
RST |
2019 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
RST |
2020 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
RST |
2021 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
RST |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
RST |
2023 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
SSV |
2019 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
SSV |
2020 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
SSV |
2021 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
WT |
2019 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
WT |
2020 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
WT |
2021 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
WT |
2022 |
5.3L / 325 / V8 |
| Chevrolet |
Silverado 1500 |
WT |
2023 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 Limited |
Denali |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 Limited |
Elevation |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 Limited |
Pro |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 Limited |
SLE |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 Limited |
SLT |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
AT4 |
2019 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
AT4 |
2020 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
AT4 |
2021 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Base |
2019 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Base |
2020 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Base |
2021 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Denali |
2019 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Denali |
2020 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Denali |
2021 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Denali |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Denali |
2023 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Elevation |
2019 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Elevation |
2020 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Elevation |
2021 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Elevation |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Elevation |
2023 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Pro |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
Pro |
2023 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLE |
2019 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLE |
2020 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLE |
2021 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLE |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLE |
2023 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLT |
2019 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLT |
2020 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLT |
2021 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLT |
2022 |
5.3L / 325 / V8 |
| GMC |
Sierra 1500 |
SLT |
2023 |
5.3L / 325 / V8 |
