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.
Features:
- Extreme Sound for Extreme Lifestyles
- Stainless Steel Construction
- Flowmaster Reliability
- Race Proven Outlaw Muffler Technology
2009-2013 Chevrolet Silverado & GMC Sierra 1500 trucks with the 5.3L engine with 143.5 and 157.5-inch wheelbases.
Installation Notes:
2009-2013 Chevrolet Silverado & GMC Sierra 1500 trucks with the 5.3L engine with 143.5 and 157.5-inch wheelbases.
About Flowmaster
Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make |
Model |
Years |
Engine |
Chevrolet |
Silverado 1500 |
2009 |
5.3L / 325 / V8 |
Chevrolet |
Silverado 1500 |
2010 |
5.3L / 325 / V8 |
Chevrolet |
Silverado 1500 |
2011 |
5.3L / 325 / V8 |
Chevrolet |
Silverado 1500 |
2012 |
5.3L / 325 / V8 |
Chevrolet |
Silverado 1500 |
2013 |
5.3L / 325 / V8 |
GMC |
Sierra 1500 |
2009 |
5.3L / 325 / V8 |
GMC |
Sierra 1500 |
2010 |
5.3L / 325 / V8 |
GMC |
Sierra 1500 |
2011 |
5.3L / 325 / V8 |
GMC |
Sierra 1500 |
2012 |
5.3L / 325 / V8 |
GMC |
Sierra 1500 |
2013 |
5.3L / 325 / V8 |