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

  • Sale
  • Regular price $1,073.95

Compatible: (5.3L)

2009 - 2013 Chevy Silverado 

2009 - 2013 GMC Sierra

2009-2013 GM Silverado/Sierra 1500 trucks with the 5.3L engine and fits all 2/4 wheel drives 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.


This Outlaw cat-back exhaust system is for 2009-2013 GM Silverado/Sierra 1500 trucks with the 5.3L engine and is perfect for the person looking for an aggressive sound level, both inside and outside of the truck. This bolt-on emissions-legal system features 3.00-inch mandrel-bent stainless steel tubing flowing into a Super 10 Series muffler, for a deep powerful aggressive sound. The large 3.00-inch mandrel-bent stainless steel tailpipes can be configured with your choice of exit locations, either straight out the back under the bumper for a muscular look, or exiting out behind the rear tires on each side of the truck. The side exit tailpipes are the ideal exit location when towing a boat or RV. The tailpipes are finished off with large 4.00-inch black ceramic coated dual-wall stainless steel tips. The system includes all necessary parts and hardware for an easy installation and is covered by our Lifetime Limited Warranty. Notes: Fits all 2/4 wheel drives with 143.5 and 157.5-inch wheelbases.


  • Lifetime Limited Warranty
  • Stainless Steel Construction
  • Black and Ceramic Tips
  • Super Aggressive Sound


Brand Flowmaster
Catalytic Converter Included No
Color Black
Emission Code 5
Exhaust Series Outlaw
Exit Position Dual Out Rear / Dual Out Side
Heat Shield No
Inlet Diameter (in) 3
Material 409 Stainless Steel
Mount Type Flanged
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series Super 10 Series
Muffler Type Reflection
Outlet Diameter (in) 3
Product Type Exhaust System
Shape Oval
Single Dual Dual
Sound Level Aggressive
System Type Cat-back
Tip Cut Angle
Tip Diameter (in) 4
Tip Edge Style Cut
Tip Finish Black and Ceramic
Tip Length (in) 13
Tip Logo Embossed
Tip Material Stainless Steel
Tip Quantity 2
Tip Shape Round
Tubing Diameter (in) 3
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 Required Yes
Part Number 817688


Install Guide: