🚚Ships from Flowmaster — this item ships direct from the
manufacturer. It usually goes out quickly, but because it leaves their warehouse rather
than ours, delivery can take a little longer than our in-stock parts.
This Flowmaster® Flow FX® cat-back exhaust system for the 2011-2019 GM 2500HD/3500HD trucks with the 6.0-liter engine is manufactured using durable 409 stainless steel throughout and features 3.50 to 3.00-inch mandrel bent pipes for better exhaust gas flow. This system exits with dual 4.00-inch black stainless steel tips for added style and a custom look. Max gains of 10 hp and 10 lb-ft of torque at the rear wheels over stock. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Fits extended cab or crew cab models with the 6.5 foot bed only. Backed by Flowmaster's Lifetime Limited Warranty.
3.50-inch to dual 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
Flow FX “Straight Through” muffler delivers and aggressive to moderate sound level with increased performance
Includes complete hardware and factory styled hangers in the stock locations for an easy installation
Max gains of 10 hp and 10 lb-ft of torque at the rear wheels over stock
4.00-Inch black stainless steel tips add a custom look to the truck
Vehicle Fitment
2011-2019 Chevrolet Silverado 2500 HD
2011-2019 Chevrolet Silverado 3500 HD
2011-2019 GMC Sierra 2500 HD
2011-2019 GMC Sierra 3500 HD
Please verify exact fitment for your trim and engine before ordering.
🚚 Vendor Direct Shipment: This item is not stocked in our warehouse and ships directly from the manufacturer. Please allow additional handling time before dispatch.
Manufacturer Part Number: 717987
Images are for illustrative purposes only. Actual product may vary.
⚠ WARNING (California Proposition 65): This product can expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
