2021 Chevrolet Flowmaster Parts
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- 3.5 To 2.5 in. Tubing; Dual Side Exit; 409 Stainless Steel; Dual 4.5 in. Black Ceramic Coated Tips; Includes Hardware/Factory Hangers;50 State Legal / California Emissions Compliant
- FlowFX Cat-Back Exhaust System; 3.5 To 2.5 in. Tubing; Dual Side Exit; 409 Stainless Steel; Dual 4.5 in. Black Ceramic Coated Tips; Includes Hardware/Factory Hangers;
- FlowFX Cat-Back Exhaust System
- Product Attributes:
- Exhaust Type: Cat-back
- Exit Position: Dual Side
- Tip Diameter: 4.500 In.
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
-
Features:
- Max Increases Of Up To 9 Hp And 12 Lb-Ft Over The Stock Exhaust At The Rear Wheels
- Single 3.50-Inch To Dual 2.50-Inch Mandrel Bent 16-Gauge 409 Stainless Steel Tubing Maximizes Exhaust Flow
- 4.50-Inch Black Ceramic Coated Tips Add A Custom Look To The Truck
- Includes Complete Hardware And Factory Styled Hangers In The Stock Locations For An Easy Installation
- Flowfx Straight Through Performance Muffler Delivers A Deep/Moderate Performance Tone And Improves exhaust Flow
- This Flowmaster(R) FlowFX(R) cat-back exhaust system for the 2019-2023 GM 1500 trucks with the 2.7-liter turbo engine and a 147-inch or 157-inch wheelbase. This system is manufactured using durable 409 stainless steel throughout and features single 3.50-inch to dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and a FlowFX straight- through muffler is used for a moderate sound level and maximum performance. Maximum increases on the dyno revealed +9 hp and +12 lb.-ft at the rear wheels. This system exits out both sides, behind the rear wheels with 4.50-inch black ceramic 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 Flowmasters Lifetime Limited Warranty.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - Chevrolet Silverado 1500 | L | 2720 | 4 Cyl 2.7L | 69.9 | LT | Crew Cab Pickup | 166 |
- Single; Dual Rear Or Side Exit; Includes 3.0 in. Tubing/10 Series Mufflers/4.0 in. Black Ceramic 304 Stainless Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
- Outlaw Series™ Cat Back Exhaust System; Single; Dual Rear Or Side Exit; Includes 3.0 in. Tubing/10 Series Mufflers/4.0 in. Black Ceramic 304 Stainless Tips; 409 Stainless Steel;
- Outlaw Series™ Cat Back Exhaust System
- Product Attributes:
- Tip Quantity: 2
- Tubing Material: 409s Stainless Steel
- Muffler Overall Length: 12.000 In.
- Muffler Type: Reflection
- Tip Logo: Embossed
- Sound Level: Aggressive
- WARNING CA Proposition 65: Yes
- Tip Finish: Black Ceramic Coated
- Muffler Color: Black
- Tip Length: 13.000 In.
- Tip Type: Double Wall
- Muffler Body Length: 6.250 In.
- Muffler Inlet Location: Center
- Exit Position: Dual Out Rear/ Dual Out Side
- Muffler Count: 1
- Muffler Finish: Painted
- Single or Dual: Dual
- System Type: Cat Back
- Tip Material: 304 Stainless Steel
- Muffler Outlet Location: Dual Outlet
- Mount Type: Uses Factory Hangers
- Exhaust Type: Cat-back
- California Proposition 65 Chemical Name 2: Chromium (hexavalent Compounds)
- California Proposition 65 Chemical Name 1: Nickel (metallic)
- Catalytic Converter Included: No
- Exhaust Series: Outlaw
- Heat Shield Attached: No
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Muffler Series: 10 Series
- Tip Cut: Angle
- Muffler Body Shape: Oval
- Muffler Body Material: 409s Stainless Steel
- Tip Shape: Round
- Tip Edge Style: Cut
- Muffler Part Number: Kit Only
-
Features:
- Deep Powerful Tone Inside And Outside The Vehicle
- Large 4 in. Angle Cut Exit
- Full Stainless Steel Construction
- Easy At Home Installation
- This Flowmaster Outlaw Cat-back exhaust system is perfect for the person looking for maximum sound levels both inside and outside the vehicle and are not afraid of getting peoples attention. This emissions-legal system is for the 2019 (new body style) to 2022 GM Silverado/Sierra 1500 trucks with 5.3L engine and features a stainless steel Super 10 Series muffler, all mandrel-bent 3.00-inch stainless steel tubing and uses the factory hanger locations for an easy installation. The large dual 3.00-inch stainless tailpipes ensure maximum power and a deep powerful sound. This bolt-on system comes with your choice of tailpipe exits, either dual out the rear, or dual out the sides behind the rear wheels which prevents blowing exhaust on your boat or trailer when towing. The system is finished off with a pair of large 4.00-inch double wall black ceramic coated stainless tips for a custom look. Designed for a perfect-fit, the system includes installation instructions and all the necessary hardware for an easy at home installation. Maximum dyno gains of 10 hp and 13 lb. Ft. at the rear wheels. Notes: Fits Crew Cab and Double Cab models with factory single tailpipe only.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Body | CID |
|---|---|---|---|---|---|---|
| 2021 - Chevrolet Silverado 1500 | V | 5328 | 8 Cyl 5.3L | 79.4 | Crew Cab Pickup | 325 |
- Dual Out Rear Exit; Includes 2.5 in. Tubing/Straight Through Mufflers; 409 Stainless Steel;50 State Legal / California Emissions Compliant
- FlowFX Cat-Back Exhaust System; Dual Out Rear Exit; Includes 2.5 in. Tubing/Straight Through Mufflers; 409 Stainless Steel;
- FlowFX Cat-Back Exhaust System
- Product Attributes:
- Tail Pipe Diameter: 2.500 In.
- Tubing Diameter: 2.500 In.
- Exhaust Type: Cat-back
- California Proposition 65 Chemical Name 2: Chromium (hexavalent Compounds)
- Exit Position: Dual Out Rear
- California Proposition 65 Chemical Name 1: Nickel (metallic)
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Inlet Inside Diameter: 2.500 In.
- Muffler Body Length: 18.000 In.
-
Features:
- Deep Powerful Tone Inside And Outside The Vehicle
- Exits Through The Factory Exhaust Bezels
- Full Stainless Steel Construction
- Easy At Home Installation
- This Flowmaster FlowFX Cat-back exhaust system is designed for the 2019*-2022 GM Silverado/Sierra 1500 trucks (*new body style) with 5.3L engine and factory dual exhaust. This bolt-on system is manufactured using durable 409 stainless steel throughout and features a 3.00-inch inlet pipe leading to a single inlet/dual outlet FlowFX straight-through muffler for a deep, moderately aggressive sound and maximum performance. Maximum dyno gains of 21 hp and 26 lb. Ft at the rear wheels. The dual 2.50-inch mandrel bent tailpipes are custom routed to clear the factory spare tire and tow hitch without any clearance issues and exit out through the factory exhaust bezels in the bumper, retaining the factory dual exhaust appearance. This system utilizes factory hanger locations, includes installation instructions, and all necessary hardware for an easy at home installation. Note: Fits 2WD and 4WD models.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Body | CID |
|---|---|---|---|---|---|---|
| 2021 - Chevrolet Silverado 1500 | V | 5328 | 8 Cyl 5.3L | 69.9 | Crew Cab Pickup | 325 |
- 3.5 To 3.0 in. Tubing; 409 Stainless Steel; 4.0 in. Dual Polished Tips; Includes Installation Hardware;50 State Legal / California Emissions Compliant
- Outlaw Series™ Cat Back Exhaust System; 3.5 To 3.0 in. Tubing; 409 Stainless Steel; 4.0 in. Dual Polished Tips; Includes Installation Hardware;
- Outlaw Series™ Cat Back Exhaust System
- Product Attributes:
- Exhaust Type: Cat-back
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
-
Features:
- Max Increases Of Up To 9 Hp And 9 Lb.Ft. Over The Stock Exhaust At The Rear Wheels
- 3.50 And 3.00 In. Mandrel Bent 16-Gauge 409 Stainless Steel Tubing Maximizes Exhaust Flow And Improves Durability
- Dual 4.00-Inch Polished Stainless Steel Tips Add A Custom Look
- Includes Complete Hardware And Factory Styled Hangers In The Stock Locations For An Easy Installation
- Backed By Flowmaster s Lifetime Limited Warranty
- Can Be Configured To Exit Straight Out The Rear Or Out The Side Depending On Preference
- This Flowmaster(R) Outlaw(R) Cat-back exhaust system for the 2020-2022 Chevy Silverado and GMC Sierra 2500HD/3500HD trucks with the 6.6L gas engine, is perfect if you are looking for an aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster(R). Maximum increases of up to 9 hp and 9 lb. Ft. over the stock exhaust at the rear wheels. Designed for the Crew Cab, Standard Bed (6.5 ft.) models only, this bolt-on, emissions-legal system features a stainless steel Outlaw series muffler and large dual 3.00-inch 409 stainless steel mandrel-bent tailpipes that can be configured to exit either dual straight out the back, or dual out the sides behind the rear wheels which is best suited for towing applications. The system is finished off with polished 4.00-inch stainless steel tips and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - Chevrolet Silverado 2500 HD | V | 6571 | 8 Cyl 6.6L | 82.2 | WT | Standard Cab Pickup | 401 |
- Outlaw Series™ Cat Back Exhaust System
- 3.5 To 3.0 in. Tubing; 409 Stainless Steel; 4.0 in. Dual Polished Tips; Includes Installation Hardware;50 State Legal / California Emissions Compliant
- Outlaw Series™ Cat Back Exhaust System; 3.5 To 3.0 in. Tubing; 409 Stainless Steel; 4.0 in. Dual Polished Tips; Includes Installation Hardware;
- Outlaw Series(TM) Cat Back Exhaust System
- Product Attributes:
- Exhaust Type: Cat-back
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
-
Features:
- Max Increases Of Up To 9 Hp And 9 Lb.Ft. Over The Stock Exhaust At The Rear Wheels
- 3.50 And 3.00 In. Mandrel Bent 16-Gauge 409 Stainless Steel Tubing Maximizes Exhaust Flow And Improves Durability
- Dual 4.00-Inch Polished Stainless Steel Tips Add A Custom Look
- Includes Complete Hardware And Factory Styled Hangers In The Stock Locations For An Easy Installation
- Backed By Flowmaster s Lifetime Limited Warranty
- Can Be Configured To Exit Straight Out The Rear Or Out The Side Depending On Preference
- This Flowmaster(R) Outlaw(R) Cat-back exhaust system for the 2020-2022 Chevy Silverado and GMC Sierra 2500HD/3500HD trucks with the 6.6L gas engine, is perfect if you are looking for an aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster(R). Maximum increases of up to 9 hp and 9 lb. Ft. over the stock exhaust at the rear wheels. Designed for the Crew Cab, Standard Bed (6.5 ft.) models only, this bolt-on, emissions-legal system features a stainless steel Outlaw series muffler and large dual 3.00-inch 409 stainless steel mandrel-bent tailpipes that can be configured to exit either dual straight out the back, or dual out the sides behind the rear wheels which is best suited for towing applications. The system is finished off with polished 4.00-inch stainless steel tips and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - Chevrolet Silverado 3500 HD | V | 6571 | 8 Cyl 6.6L | 82.2 | WT | Crew Cab Pickup | 401 |
- Dual; Dual Out Rear Exit; Includes 3 in. Tubing/40 Series(TM) Delta Flow Outlaw/4 in. Logo Embossed Stainless Tip; 409 Stainless Steel;50 State Legal / California Emissions Compliant
- American Thunder Axle Back Exhaust System; Dual; Dual Out Rear Exit; Includes 3 in. Tubing/40 Series™ Delta Flow Outlaw/4 in. Logo Embossed Stainless Tip; 409 Stainless Steel;
- American Thunder Axle Back Exhaust System
- Product Attributes:
- Tip Quantity: 4
- Tubing Material: 409s Stainless Steel
- Muffler Type: Welded Baffle
- Tip Logo: Embossed
- Sound Level: Aggressive
- WARNING CA Proposition 65: Yes
- Tip Finish: Polished
- Tip Length: 5.250 In.
- Tip Type: Double Wall
- Exit Position: Dual Out Rear
- Muffler Count: 2
- Muffler Finish: Black
- Single or Dual: Dual
- System Type: Axle Back
- Tip Material: 304 Stainless Steel
- Mount Type: Uses Factory Hangers
- Exhaust Type: Dual
- California Proposition 65 Chemical Name 2: Chromium (hexavalent Compounds)
- Catalytic Converter Included: No
- California Proposition 65 Chemical Name 1: Nickel (metallic)
- Heat Shield Attached: No
- Exhaust Series: American Thunder
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Exit Style: Straight
- Muffler Series: 40 Series Delta Flow Outlaw
- Tip Cut: Angle
- Muffler Body Material: 409s Stainless Steel
- Muffler Body Shape: Oval
- Tip Shape: Round
- Tip Edge Style: Cut
- Muffler Part Number: Kit Only
-
Features:
- Mandrel Bent 16ga 409 Stainless Tubing
- Limited Lifetime Warranty
- Aggressive And Powerful Exterior Exhaust Tone
- Includes Hangers and Hardware For Easy Installation
- Axle Back System
- Dual Rear Exit
- Dyno Tuned for Maximum Performance
- Premium Flowmaster Quality
- The Flowmaster American Thunder Axle-back system for the 2016-2022 Camaro SS & ZL1 with the 6.2L engine, is perfect for the person looking for a powerful and very aggressive sound quality in Track mode, while maintaining a deep mellow tone for everyday driving. This kit features tandem 40 Delta Flow Series mufflers for daily driving, along with a pair of our race-proven Outlaw mufflers that actually increase the open exhaust sound when in Track mode. The system is finished off with large quad 4.00-inch polished stainless steel tips replicating the factory quad NPP exhaust look. Includes functional exhaust valves to work with the O.E. actuator motors to select between sound levels. The exhaust system is full stainless steel and is covered by Flowmasters Lifetime Limited Warranty. Designed for an easy fit on both coupe top and convertible models with the factory NPP option (identified by quad tips.) The system includes all necessary parts and hardware for installation. Note: Be sure to check out our Scavenger Series X-pipes, #81083 for 6-spd manual and #81084 for automatics with factory MDS valves, both designed to replace the factory mid-pipe and the flattened section of the factory tubing.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Sub Model | CID |
|---|---|---|---|---|---|
| 2021 - Chevrolet Camaro | V | 6162 | 8 Cyl 6.2L | ZL1 | 376 |
- 3.0 in. Tubing; Dump Style Exit; 409 Stainless Steel; Includes Hardware;50 State Legal / California Emissions Compliant
- FlowFX Extreme Cat-Back Exhaust System; 3.0 in. Tubing; Dump Style Exit; 409 Stainless Steel; Includes Hardware;
- FlowFX Extreme Cat-Back Exhaust System
- Product Attributes:
- Exhaust Type: Cat-back
- Exit Position: Rear
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
-
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 With The 717977 Kit
- 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
- Flowmaster introduces our FlowFX Extreme stainless steel cat-back exhaust system for the 2019*-2022 (* 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 Flowmasters Lifetime Limited Warranty.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Body | CID |
|---|---|---|---|---|---|---|
| 2021 - Chevrolet Silverado 1500 | V | 5328 | 8 Cyl 5.3L | 79.4 | Crew Cab Pickup | 325 |
- 3.5 To 2.5 in. Tubing; Dual Rear Exit; 409 Stainless Steel; Includes Hangers/Installation Hardware;50 State Legal / California Emissions Compliant
- FlowFX Cat-Back Exhaust System; 3.5 To 2.5 in. Tubing; Dual Rear Exit; 409 Stainless Steel; Includes Hangers/Installation Hardware;
- FlowFX Cat-Back Exhaust System
- Product Attributes:
- Tubing Diameter: 2.500 In
- Exhaust Type: Cat-back
- Exit Position: Dual Rear
- Tip Diameter: 2.500 In.
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
-
Features:
- Max Increases Of Up To 26 Hp And 39 Lb.Ft. Over The Stock Exhaust At The Rear Wheels
- 3.5 And 2.5 In. Mandrel Bent 16-Gauge 409 Stainless Steel Tubing Maximizes Exhaust Flow And Improves Durability
- Connects To The Factory Dual Exhaust Tips For A Stealthy Look
- Includes Complete Hardware And Factory Styled Hangers In The Stock Locations For An Easy Installation
- Backed By Flowmaster s Lifetime Limited Warranty
- This Flowmaster(R) FlowFX(R) cat-back exhaust system for the 2019-2022 GM Silverado/Sierra 1500 trucks with the 6.2L engine is manufactured using durable 409 stainless steel throughout and features 3.5-inch to dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and a FlowFX straight-through muffler is used for a moderate sound level and maximum performance. Maximum increases on the dyno revealed +26 hp and +39 lb. Ft at the rear wheels. This system fits all wheelbases and connects to the factory exhaust tips that exit in the rear bumper for a stealthy 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 Flowmasters Lifetime Limited Warranty.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - Chevrolet Silverado 1500 | V | 6162 | 8 Cyl 6.2L | 69.9 | Custom Trail Boss | Crew Cab Pickup | 376 |
- Single; Dual Rear Same Side Exit; Includes 3 in. Tailpipes/50 Series(TM) HD Muffler/4 in. Stainless Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
- American Thunder Cat Back Exhaust System; Single; Dual Rear Same Side Exit; Includes 3 in. Tailpipes/50 Series™ HD Muffler/4 in. Stainless Tips; 409 Stainless Steel;
- American Thunder Cat Back Exhaust System
- Product Attributes:
- Exhaust Type: Cat-back
- Exit Position: Dual Out Rear/ Dual Out Side
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
-
Features:
- Mandrel Bent 16 Gauge 409 Stainless Tubing
- Uses The Factory Hanger Locations To Ease Installation
- 50 Series HD Muffler With Delta Flow Technology
- Increased Performance And Exhaust Flow
- Multiple Tailpipe Exits Provided In Kit
- Deep Powerful Exterior Sound
- Large 3 in. Dual Tailpipes
- Lifetime Limited Warranty
- Flowmaster Quality
- The Flowmaster American Thunder Cat-back exhaust system for the 2020-2022 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks with the 6.6L gas engine, has a moderate to aggressive sound level inside and outside of the truck, with all of the performance benefits you expect from Flowmaster. Designed for the Crew Cab, Standard Bed (6.5 ft.) models only, this bolt-on, emissions-legal system features a stainless steel 50 Series HD muffler and large dual 3.00-inch 409 stainless steel mandrel-bent tailpipes that can be configured to exit either dual straight out the back, or dual out the sides behind the rear wheels which is best suited for towing applications. The system is finished off with a pair of large 4.00-inch polished 304 stainless steel tips and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation. Notes: Fits Crew Cab with 6.5 bed length, 159-inch wheelbase only.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Body | CID |
|---|---|---|---|---|---|---|
| 2021 - Chevrolet Silverado 2500 HD | V | 6571 | 8 Cyl 6.6L | 82.2 | Crew Cab Pickup | 401 |
- Dual Out Rear Or Side Exit; Includes 2.5in. Tubing/Super 40 Series Muffler/3.5 in. Polished Tips; 409 Stainless Steel;50 State Legal / California Emissions Compliant
- American Thunder Cat Back Exhaust System; Dual Out Rear Or Side Exit; Includes 2.5in. Tubing/Super 40 Series Muffler/3.5 in. Polished Tips; 409 Stainless Steel;
- American Thunder Cat Back Exhaust System
- Product Attributes:
- Tail Pipe Diameter: 2.500 In.
- Tubing Diameter: 2.500 In.
- Exhaust Type: Cat-back
- California Proposition 65 Chemical Name 2: Chromium (hexavalent Compounds)
- Exit Position: Dual Out Rear
- California Proposition 65 Chemical Name 1: Nickel (metallic)
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
- Inlet Inside Diameter: 2.500 In.
-
Features:
- Deep Powerful Performance Tone
- Full Stainless Steel Construction
- Easy Installation
- This Flowmaster American Thunder Cat-back exhaust system is perfect for the person looking for deep, powerful sound outside the vehicle with a little growl inside the cab. This emissions-legal system is for 2WD & 4WD 2019-2022 GM 1500 trucks (new body style) with the 5.3L engine and factory single exhaust. System features include full stainless steel construction, a single in/dual outlet Super 40 Series muffler and mandrel-bent dual 2.50-inch stainless steel tailpipes for maximum performance and a deep sound. Maximum dyno gains of 21 hp and 23 lb. Ft. at the rear wheels. This bolt-on system utilizes the factory hanger locations and includes your choice of tailpipe exits, either dual out the rear exiting under the bumper, or dual out the side behind the rear wheels to help prevent blowing exhaust on your boat or trailer when towing. The system is finished off with a pair of large 3.50-inch double wall polished 304 stainless steel tips. Designed for a perfect fit, the system includes installation instructions and all the necessary hardware for an easy at home installation. Note: Fits 2/4 wheel drive Crew cab and double cab models.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Body | CID |
|---|---|---|---|---|---|---|
| 2021 - Chevrolet Silverado 1500 | V | 5328 | 8 Cyl 5.3L | 79.4 | Extended Cab Pickup | 325 |
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