Flowmaster® (07-13) Silverado/Sierra 409SS Force II Cat-Back System (Crew/Ext Cab)

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  • Regular price $617.95

Compatible: (4.8L/5.3L)

2007 - 2013 Chevy Silverado 

2007 - 2013 GMC Sierra

Fits 2007-2008 GM Silverado/Sierra 1500 4.8L, 5.3L engine flex fuel, all wheelbases except EC/LB. Also fits 2009-2013 GM Silverado/Sierra 1500 with 5.3L EC/6ft bed and CC/5.5ft bed.

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.


For the person who wants a subtle custom appearance with all the benefits that a Flowmaster® Cat-back exhaust system provides. This Force II single exhaust system includes all stainless steel 3.00-inch mandrel-bent tubing flowing into a Super 50™ Series muffler, uses the factory hanger locations and has a large single tailpipe finished off with a 3.50-inch polished stainless steel tip. This Force II® system delivers a mild exterior and interior tone, and is suited to customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation and are covered by our Lifetime Limited Warranty. Notes: Also fits 2009-2013 GM Silverado/Sierra 1500 with 5.3L Extended Cab/6-ft bed and CC/5.5ft bed.


  • Includes Hangers and all Hardware for an Easy Installation
  • Mandrel Bent 16 gauge Stainless Steel Tubing
  • Connects After Factory Catalytic Converter
  • Stock to Mild Exterior Exhaust Tone
  • Lifetime Limited Warranty
  • Minimal Interior Drone
Brand Flowmaster
Emission Code 5
Exhaust Series Force II
Exit Position Single Side Exit
Heat Shield No
Inlet Diameter (in) 3
Material 409 Stainless Steel
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series Super 50 Series
Outlet Diameter (in) 3
Product Type Exhaust System
Single Dual Single
Sound Level Mild
System Type Cat-back
Tip Diameter (in) 3.5
Tip Quantity 1
Tubing Diameter (in) 3
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 Required Yes
Part Number 817523

Install Guide: