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Flowmaster American Thunder Cat-Back Exhaust System fits 2019-2026 Chevrolet Silverado 1500 / GMC Sierra 1500

⚠️ Please verify fitment before purchasing. Check the fitment chart below or use the Year/Make/Model tool to confirm this part fits your vehicle.

⚠️ Verify fitment before purchasing. Check the fitment chart below or click the 3 lines in the top left menu, select Home, then use the Year/Make/Model guide.

Flowmaster
818113
In stock
$1,406.95 USD $1,341.99 USD
$1,341.99 USD

Flowmaster American Thunder Cat-Back Exhaust System fits 2019-2026 Chevrolet Silverado 1500 / GMC Sierra 1500
This Flowmaster® American Thunder® cat-back exhaust system for the 2019-2026 Chevrolet/GMC Silverado/Sierra with the 2.7-liter engine is manufactured using durable 409 stainless steel throughout and features dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and an American Thunder muffler is used for a moderate sound level and maximum performance. Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels over stock. This system exits dual out the rear or dual out the side, with dual 3.50-inch polished tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.


Specifications:

Description_ABR SYS 19-25 GM
Description_SHO SYS 19-25 GM 1500 TR
Description_INV 19-25 GM 1500 TRUCKS 2.7T AMT DOR/S
Description_ASC Fits 2019-2026 Chevrolet/GMC Silverado/Sierra trucks with 2.7-liter engines, 2 & 4-wheel drive. Does not fit models with the Multimatic suspension option.
Description_DES Flowmaster American Thunder Cat-Back Exhaust System
Description_EXT Fits 2019-2026 Chevrolet/GMC Silverado/Sierra 2.7-Liter, Cat-Back, Dual Out Rear/Side Exit, Stainless Steel Exhaust System
Description_MKT This Flowmaster® American Thunder® cat-back exhaust system for the 2019-2026 Chevrolet/GMC Silverado/Sierra with the 2.7-liter engine is manufactured using durable 409 stainless steel throughout and features dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and an American Thunder muffler is used for a moderate sound level and maximum performance. Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels over stock. This system exits dual out the rear or dual out the side, with dual 3.50-inch polished tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.
Description_FAB Dual 2.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
Description_FAB Dual 3.50-inch polished tips exit dual out the rear or side for a custom look
Description_FAB Includes complete hardware and factory styled hangers in the stock locations for an easy installation
Description_FAB 50 Series Big Block performance muffler delivers a deep, moderate performance tone and improves exhaust flow
Description_FAB Flowmaster’s Lifetime Limited Warranty
Description_FAB Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels
Description_FAB Fits 147-inch and 157-inch wheelbases
Description_ABR SYS 19-25 GM
Description_SHO SYS 19-25 GM 1500 TR
Description_INV 19-25 GM 1500 TRUCKS 2.7T AMT DOR/S
Description_ASC Fits 2019-2026 Chevrolet/GMC Silverado/Sierra trucks with 2.7-liter engines, 2 & 4-wheel drive. Does not fit models with the Multimatic suspension option.
Description_DES Flowmaster American Thunder Cat-Back Exhaust System
Description_EXT Fits 2019-2026 Chevrolet/GMC Silverado/Sierra 2.7-Liter, Cat-Back, Dual Out Rear/Side Exit, Stainless Steel Exhaust System
Description_MKT This Flowmaster® American Thunder® cat-back exhaust system for the 2019-2026 Chevrolet/GMC Silverado/Sierra with the 2.7-liter engine is manufactured using durable 409 stainless steel throughout and features dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and an American Thunder muffler is used for a moderate sound level and maximum performance. Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels over stock. This system exits dual out the rear or dual out the side, with dual 3.50-inch polished tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.
Description_FAB Dual 2.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
Description_FAB Dual 3.50-inch polished tips exit dual out the rear or side for a custom look
Description_FAB Includes complete hardware and factory styled hangers in the stock locations for an easy installation
Description_FAB 50 Series Big Block performance muffler delivers a deep, moderate performance tone and improves exhaust flow
Description_FAB Flowmaster’s Lifetime Limited Warranty
Description_FAB Gain up to 4 hp and 11 lbs-ft of torque at the rear wheels
Description_FAB Fits 147-inch and 157-inch wheelbases
Brand Flowmaster
California Proposition 65 Yes
California Proposition 65 Chemical Name Nickel (Metallic)
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
CARB (California) Compliant Yes
Catalytic Converter Included No
2874 0
Category Exhaust
3728 Flat Band
1882 Yes
Emission Code 5
Exhaust Series American Thunder
11205 Silver
9874 Clamp-On
9876 Angled
1162 3.50
9877 Angle Cut
1163 Polished
9881 No
10104 13.00
1164 304 Stainless Steel
1161 2
9878 No
10980 Round
9875 Double Wall
9870 Dual Out Side
9870 Dual Out Rear
200 Natural
353 No
3390 Performance
4364 Yes
Inlet Diameter 3.50
596 Flanged
9871 2.50
Mount Type Uses Factory Hangers
92 Yes
9884 5.00
1892 22.00
4372 409 Stainless Steel
4373 Oval
Muffler Color Black
9882 Black High-Temperature Paint Finish
4367 No
4368 No
Muffler Included Yes
9962 Slip-Fit
4365 3.50
Muffler Inlet Location Center
4366 3.63
9963 Slip-Fit
Muffler Outlet Diameter 2.50
Muffler Outlet Location Dual
4375 2
Muffler Overall Length 28.00
Muffler Part Number Kit Only
4374 1
Muffler Series 50 Series Big Block
1174 Reflection
part type Exhaust System
3530 409 Stainless Steel
Product Type Exhaust System
Sound Level Moderate
4377 No
Sub Category Exhaust and Tail Pipes
4369 2.50
4376 2
Tail Pipe Quantity Dual
4370 No
Tip Logo Embossed
26 Cat-Back
6014 No
2126 Not Applicable
Warning California Proposition 65
Pipe Color Silver
9885 12.00
Brand Flowmaster
California Proposition 65 Yes
California Proposition 65 Chemical Name Nickel (Metallic)
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
CARB (California) Compliant Yes
Catalytic Converter Included No
2874 0
Category Exhaust
3728 Flat Band
1882 Yes
Emission Code 5
Exhaust Series American Thunder
11205 Silver
9874 Clamp-On
9876 Angled
1162 3.50
9877 Angle Cut
1163 Polished
9881 No
10104 13.00
1164 304 Stainless Steel
1161 2
9878 No
10980 Round
9875 Double Wall
9870 Dual Out Side
9870 Dual Out Rear
200 Natural
353 No
3390 Performance
4364 Yes
Inlet Diameter 3.50
596 Flanged
9871 2.50
Mount Type Uses Factory Hangers
92 Yes
9884 5.00
1892 22.00
4372 409 Stainless Steel
4373 Oval
Muffler Color Black
9882 Black High-Temperature Paint Finish
4367 No
4368 No
Muffler Included Yes
9962 Slip-Fit
4365 3.50
Muffler Inlet Location Center
4366 3.63
9963 Slip-Fit
Muffler Outlet Diameter 2.50
Muffler Outlet Location Dual
4375 2
Muffler Overall Length 28.00
Muffler Part Number Kit Only
4374 1
Muffler Series 50 Series Big Block
1174 Reflection
part type Exhaust System
3530 409 Stainless Steel
Product Type Exhaust System
Sound Level Moderate
4377 No
Sub Category Exhaust and Tail Pipes
4369 2.50
4376 2
Tail Pipe Quantity Dual
4370 No
Tip Logo Embossed
26 Cat-Back
6014 No
2126 Not Applicable
Warning California Proposition 65
Pipe Color Silver
9885 12.00


This Part Fits:

Year Make Model Submodel Notes
2020 Chevrolet Silverado 1500 Custom Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2021 Chevrolet Silverado 1500 Custom Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 Chevrolet Silverado 1500 Custom Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2023 Chevrolet Silverado 1500 Custom Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2024 Chevrolet Silverado 1500 Custom Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2025 Chevrolet Silverado 1500 Custom Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2026 Chevrolet Silverado 1500 Custom Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 Chevrolet Silverado 1500 Custom Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2023 Chevrolet Silverado 1500 Custom Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2024 Chevrolet Silverado 1500 Custom Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2025 Chevrolet Silverado 1500 Custom Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2026 Chevrolet Silverado 1500 Custom Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2019 Chevrolet Silverado 1500 LT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2020 Chevrolet Silverado 1500 LT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2021 Chevrolet Silverado 1500 LT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 Chevrolet Silverado 1500 LT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2023 Chevrolet Silverado 1500 LT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2024 Chevrolet Silverado 1500 LT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2025 Chevrolet Silverado 1500 LT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2026 Chevrolet Silverado 1500 LT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 Chevrolet Silverado 1500 LT Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2023 Chevrolet Silverado 1500 LT Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2024 Chevrolet Silverado 1500 LT Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2025 Chevrolet Silverado 1500 LT Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2026 Chevrolet Silverado 1500 LT Trail Boss Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2019 Chevrolet Silverado 1500 RST Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2020 Chevrolet Silverado 1500 RST Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2021 Chevrolet Silverado 1500 RST Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 Chevrolet Silverado 1500 RST Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2023 Chevrolet Silverado 1500 RST Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2024 Chevrolet Silverado 1500 RST Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2025 Chevrolet Silverado 1500 RST Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2026 Chevrolet Silverado 1500 RST Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2019 Chevrolet Silverado 1500 WT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2020 Chevrolet Silverado 1500 WT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2021 Chevrolet Silverado 1500 WT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 Chevrolet Silverado 1500 WT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2023 Chevrolet Silverado 1500 WT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2024 Chevrolet Silverado 1500 WT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2025 Chevrolet Silverado 1500 WT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2026 Chevrolet Silverado 1500 WT Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 Chevrolet Silverado 1500 LTD Custom Polished Tip Finish
2022 Chevrolet Silverado 1500 LTD Custom Trail Boss Polished Tip Finish
2022 Chevrolet Silverado 1500 LTD LT Polished Tip Finish
2022 Chevrolet Silverado 1500 LTD RST Polished Tip Finish
2022 Chevrolet Silverado 1500 LTD WT Polished Tip Finish
2019 GMC Sierra 1500 Base Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2020 GMC Sierra 1500 Base Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2021 GMC Sierra 1500 Base Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2019 GMC Sierra 1500 Elevation Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2020 GMC Sierra 1500 Elevation Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2021 GMC Sierra 1500 Elevation Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 GMC Sierra 1500 Elevation Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2023 GMC Sierra 1500 Elevation Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2024 GMC Sierra 1500 Elevation Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2025 GMC Sierra 1500 Elevation Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2026 GMC Sierra 1500 Elevation Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 GMC Sierra 1500 Pro Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2023 GMC Sierra 1500 Pro Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2024 GMC Sierra 1500 Pro Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2025 GMC Sierra 1500 Pro Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2026 GMC Sierra 1500 Pro Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2019 GMC Sierra 1500 SLE Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2020 GMC Sierra 1500 SLE Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2021 GMC Sierra 1500 SLE Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 GMC Sierra 1500 SLE Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2023 GMC Sierra 1500 SLE Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2024 GMC Sierra 1500 SLE Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2025 GMC Sierra 1500 SLE Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2026 GMC Sierra 1500 SLE Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish,Polished Tip Finish
2022 GMC Sierra 1500 Limited Elevation Polished Tip Finish
2022 GMC Sierra 1500 Limited Pro Polished Tip Finish
2022 GMC Sierra 1500 Limited SLE Polished Tip Finish
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