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- 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 | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - GMC Sierra 1500 | V | 5328 | 8 Cyl 5.3L | 79.4 | Denali | Crew Cab Pickup | 325 |
- 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 - GMC Sierra 1500 | L | 2720 | 4 Cyl 2.7L | 79.4 | SLE | Crew Cab Pickup | 166 |
- 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 - GMC Sierra 1500 | V | 6162 | 8 Cyl 6.2L | 79.4 | AT4 | Crew Cab Pickup | 376 |
- 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 | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - GMC Sierra 1500 | V | 5328 | 8 Cyl 5.3L | 79.4 | Elevation | Extended 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 | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - GMC Sierra 1500 | V | 5328 | 8 Cyl 5.3L | 79.4 | Elevation | Extended Cab Pickup | 325 |
- Dual Rear Exit; Includes 3 in. Tubing/Super 40 Series(TM) Muffler/4 in. Logo Black Coated Tips;50 State Legal / California Emissions Compliant
- American Thunder Cat Back Exhaust System; Dual Rear Exit; Includes 3 in. Tubing/Super 40 Series™ Muffler/4 in. Logo Black Coated Tips;
- American Thunder Cat Back Exhaust System
- Product Attributes:
- Exhaust Type: Cat-back
- Exit Position: Dual Out Rear
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
-
Features:
- Moderate/Aggressive Exterior Tone
- Uses Factory Hanger Locations
- Stainless Steel Construction
- This Flowmaster American Thunder cat-back exhaust system for the 2019-2022 GM 1500 (new body style) trucks with 5.3L engine is perfect for the person looking for an aggressive sound level outside the truck, with a moderate interior tone and the performance benefits you would expect from Flowmaster. This emissions-legal bolt-on system fits all Crew Cab and Double Cab models with 5.5 and 6.5-ft long beds with factory dual exhaust option. Features include flex joint, mandrel-bent 3.00-inch stainless steel tubing flowing into a Super 40 Series muffler, dual 2.50-inch mandrel-bent stainless tailpipes that are finished off with quad 4.00-inch black ceramic coated stainless steel tips exiting out under the factory exhaust bezels. Designed for an easy fit, this system includes all necessary parts and hardware for an easy at home installation. Maximum dyno gains of 15 hp and 19 lb. Ft. at the rear wheels. Notes: Fits 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models with 5.3L engine. Fits models with 5.5 and 6.5-ft long beds with factory dual exhaust option.
Additional Fitment Information:
| Vehicle | Block | CC | Engine | Bed Length | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - GMC Sierra 1500 | V | 5328 | 8 Cyl 5.3L | 79.4 | Elevation | Extended Cab Pickup | 325 |
- 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;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(TM) 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 | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - GMC Sierra 1500 | V | 5328 | 8 Cyl 5.3L | 79.4 | Elevation | Extended Cab Pickup | 325 |
- 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 | Sub Model | Body | CID |
|---|---|---|---|---|---|---|---|
| 2021 - GMC Sierra 1500 | V | 5328 | 8 Cyl 5.3L | 79.4 | Elevation | Extended Cab Pickup | 325 |
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