Description
Overview
The Flowmaster Outlaw Extreme Cat-back Exhaust System is engineered for drivers who want the most aggressive sound available for their truck. Built for the 2009-2013 Chevrolet Silverado 1500 and GMC Sierra 1500 equipped with the 5.3L engine, this Outlaw Extreme kit combines proven Flowmaster muffler technology with a bold, no-tailpipe design to deliver a commanding tone inside and outside the cab.
At the heart of the system is a race-proven 3.00-inch stainless steel Outlaw muffler, paired with a 3.00-inch dump style turn-down exit. With no tailpipes to tame the note, the Outlaw Extreme releases a raw, unfiltered exhaust sound that lives up to its name. The stainless steel construction and blacked-out pipe finish add durability and a purposeful, blacked-out look under the truck.
Key Benefits
This is a complete cat-back kit that includes the muffler and all necessary parts and hardware, so you get everything needed for the job in one package. It’s designed to bolt up using the factory hangers, making it a straightforward installation you can tackle at home without cutting or fabricating custom mounts. The system is CARB (California) compliant, so it’s a legal upgrade for emissions-conscious owners, and it carries Flowmaster’s Lifetime Limited Warranty for long-term peace of mind.
- Race-proven 3.00-inch stainless steel Outlaw muffler for maximum aggressive tone
- 3.00-inch dump style turn-down exit with no tailpipes for an unmistakable sound
- Black pipe finish and durable stainless steel construction
- Mounts using factory hangers for an easy, at-home installation
- Includes the muffler plus all necessary parts and hardware
- CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
The Sound
As part of the Outlaw Extreme series, this system is tuned for a very aggressive sound level. Expect a deep, loud exhaust note that carries both outside the truck and into the cabin. If you’re chasing an exhaust that makes a statement every time you fire it up and get on the throttle, the Outlaw Extreme delivers exactly that.
Fitment
This cat-back system is designed specifically for 2009-2013 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks with the 5.3L engine. It fits 2-wheel drive and 4-wheel drive Extended Cab and Crew Cab models only, with 143.5-inch and 157.5-inch wheelbases. The kit features a 3.00-inch inlet diameter, a single tail pipe configuration, and no heat shield or tip logo. Please verify your cab style and wheelbase before ordering to ensure a correct fit.
For Silverado and Sierra owners who want an exhaust with attitude, the Flowmaster Outlaw Extreme Cat-back System brings the sound, the stainless steel durability, and the easy factory-hanger installation together in one aggressive package.








