Flowmaster® (09-13) Silverado/Sierra 409SS Outlaw Extreme Cat-Back System (143.5"/157.5" WB)

  • Sale
  • Regular price $331.95

Compatible: (5.3L)

2009 - 2013 Chevy Silverado 

2009 - 2013 GMC Sierra

2009-2013 Chevrolet Silverado & GMC Sierra 1500 trucks with the 5.3L engine with 143.5 and 157.5-inch wheelbases.


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.



Flowmaster introduces their new Outlaw Extreme Cat-back system for the 2009-2013 Chevrolet Silverado & GMC Sierra 1500 trucks with the 5.3L engine. These kits deliver the ultimate sound in aggressive exhaust systems by using a race-proven 3.00-inch stainless steel Outlaw muffler with a 3.00-inch dump style turn down exit with no tailpipes. As an Outlaw extreme system, this will deliver a very aggressive sound and tone both outside and inside the truck. The stainless steel system is covered by our Lifetime Limited Warranty and includes all of the necessary parts and hardware for an easy installation you can do at home. This system fits both 2/4 wheel drive Extended Cab and Crew Cab models only with 143.5 and 157.5-inch wheelbases.


  • Extreme Sound for Extreme Lifestyles
  • Stainless Steel Construction
  • Flowmaster Reliability
  • Race Proven Outlaw Muffler Technology


Brand Flowmaster
Catalytic Converter Included No
Color Black
Emission Code 5
Exhaust Series Outlaw Extreme
Exit Position Single Out - Dump
Heat Shield No
Inlet Diameter (in) 3
Material 409 Stainless Steel
Mount Type Uses Factory Hangers
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series Outlaw
Muffler Type Welded Baffle
Outlet Diameter (in) 3
Product Type Exhaust System
Shape Round
Single Dual Single
Sound Level Aggressive
System Type Cat-back
Tip Cut Square
Tip Diameter (in) 3
Tip Edge Style Cut
Tip Finish Natural
Tip Length (in) 12
Tip Logo None
Tip Material 409 Stainless Steel
Tip Quantity 1
Tip Shape Round
Tubing Diameter (in) 3
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 Required Yes
Part Number 817706

Install Guide: