Description
The Flowmaster Flow FX Cat-Back Exhaust System is designed for 2009–2013 GM Silverado and Sierra 1500 trucks equipped with the 5.3L engine, delivering maximum performance with an aggressive to moderate exhaust tone. This system is constructed entirely from durable 409 stainless steel and features a 3.00-inch inlet pipe feeding into a single-inlet, dual-outlet Flow FX straight-through performance muffler for increased airflow and horsepower gains.
Dual 2.50-inch mandrel-bent stainless steel tailpipes exit at an angle behind the rear wheels, directing exhaust away from trailers, boats, or campers when towing. The system is finished with a pair of large 4.50-inch black ceramic-coated 304 stainless steel tips, giving your truck a bold custom appearance that complements the deep Flow FX exhaust sound.
Designed for a direct bolt-on installation, this system uses all factory hanger locations and includes an additional hanger for the left-side tailpipe. Installation instructions and all required hardware are included, making this an easy at-home upgrade. Backed by Flowmaster’s Lifetime Limited Warranty.
Key Features
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Straight-through Flow FX absorption-style performance muffler
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Aggressive exterior tone with moderate interior sound
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Mandrel-bent 16-gauge 409 stainless steel tubing
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Dual side-exit exhaust design for towing clearance
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Large 4.50-inch black ceramic-coated stainless steel tips
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Uses factory hanger locations with additional hanger included
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Clears the factory spare tire
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Easy bolt-on installation
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Covered by Flowmaster’s Lifetime Limited Warranty
Fitment
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Year: 2009, 2010, 2011, 2012, 2013
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Make: Chevrolet, GMC
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Model: Silverado 1500, Sierra 1500
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Engine: 5.3L V8
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Drive: 2WD and 4WD
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Wheelbase: 143.5-inch and 157.5-inch only
Notes: Fits 2WD and 4WD models with 143.5-inch and 157.5-inch wheelbases only.
Technical Specifications
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Brand: Flowmaster
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Exhaust Series: Flow FX
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Type: Cat-Back Exhaust System
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Sound Level: Aggressive / Moderate
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Material: 409 Stainless Steel
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Main Inlet Diameter: 3.00 IN
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Main Piping Diameter: 2.50 IN
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Muffler Type: Absorption (Straight-Through)
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Muffler Series: Flow FX
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Muffler Body Length: 18.00 IN
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Muffler Overall Length: 24.00 IN
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Muffler Body Material: 409 Stainless Steel
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Exhaust Tip Diameter: 4.50 IN
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Exhaust Tip Material: 304 Stainless Steel
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Exhaust Tip Finish: Black Ceramic Coating
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Exit Style: Dual Out Side
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Clamps Included: Yes
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Hangers Included: Yes
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Catalytic Converter Included: No
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CARB Compliant: Yes
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Warranty: Lifetime Limited Warranty
