Flowmaster® (14-19) Silverado/Sierra 409SS Outlaw Extreme Cat-Back System (143.5"/153" WB)

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  • Regular price $326.95

Compatible: (4.3L/5.3L)

2014 - 2019 Chevy Silverado (CLASSIC BODY STYLE)

2014 - 2019 GMC Sierra (CLASSIC BODY STYLE)


Does Not fit 2019 New body trucks. Fits 2014-2019* (*Classic body) GM Silverado/Sierra 1500, 4.3L, 5.3L, 2/4 WD, 143.5-inch & 153-inch Wheelbase.


This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.


Introducing our new Outlaw Extreme Cat-back system for the 2014-2019 GM Silverado/Sierra 1500 with the 4.3L and 5.3L engine. These kits deliver the ultimate sound in aggressive exhaust systems by using a 3.00-inch race-proven Outlaw muffler and a single 3.00-inch single dump style turndown exit under the bed, for the ultimate deep and aggressive sound that will get you noticed. The system is manufactured using 409 stainless steel for durability and uses the factory hangers. As an Outlaw extreme system, this will deliver a very aggressive sound both outside and inside the truck that will get you noticed. Comes with all hardware and detailed instructions for an easy installation that can be done in less than an hour. Notes: Fits 2014-2019* (*Classic body) 2/4 WD, 143.5-inch & 153-inch Wheelbases.


  • Race Proven Outlaw Muffler Technology
  • Extreme Sound for Extreme Lifestyles
  • Mandrel-bent Stainless Steel Tubing
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Uses the Factory Hangers
  • Easy Installation


Brand Flowmaster
Emission Code 5
Exhaust Series Outlaw Extreme
Exit Position Single Out - Dump
Material 409 Stainless Steel
Mount Type Uses Factory Hangers
Product Type Exhaust System
Single Dual Single
Sound Level Aggressive
System Type Cat-back
Tubing Diameter (in) 3
Tubing Material 409S Stainless Steel
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 Required Yes
Part Number 817916

Install Guide: