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This Flowmaster® American Thunder® Cat-back exhaust system is perfect for the person looking for deep, powerful sound outside the vehicle with a little growl inside the cab. This emissions-legal system is for 2WD & 4WD 2019-2026 GM 1500 trucks (new body style) with the 5.3L engine and factory single exhaust. System features include full stainless steel construction, a single in/dual outlet Super 40® Series muffler and mandrel-bent dual 2.50-inch stainless steel tailpipes for maximum performance and a deep sound.
Maximum dyno gains of 21 hp and 23 lb.ft. at the rear wheels. This bolt-on system utilizes the factory hanger locations and includes your choice of tailpipe exits, either dual out the rear exiting under the bumper, or dual out the side behind the rear wheels to help prevent blowing exhaust on your boat or trailer when towing. The system is finished off with a pair of large 3.50-inch double wall polished 304 stainless steel tips. Designed for a perfect fit, the system includes installation instructions and all the necessary hardware for an easy at home installation.
| Part Number | 817853 |
| Brand | Flowmaster |
| CARB (California) Compliant | Yes |
| Exhaust Series | American Thunder |
| Heat Shield Included | No |
| Mount Type | Uses Factory Hangers |
| Muffler Color | Black |
| Muffler Included | Yes |
| Muffler Inlet Location | Center |
| Muffler Outlet Diameter | 2.50 |
| Muffler Outlet Location | Dual |
| Muffler Overall Length | 19.50 |
| Muffler Part Number | Kit Only |
| Muffler Series | Super 40 Series |
| Sound Level | Aggressive / Moderate |
| Tail Pipe Quantity | Dual |
| Tip Logo | Embossed |
| Pipe Color | Silver |
Double-check your vehicle details before ordering. Questions? Email [email protected].
What vehicles does it fit?
It fits 2/4 wheel drive Crew cab and double cab models.. Double-check your vehicle details before ordering. Questions? Email [email protected].
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
Why Choose Venture Overland Company: Free shipping on orders over $100, most orders ship in 1-2 business days, and every order is covered by our 30-day return policy.
Gear Up for Adventure
At Venture Overland Company, our motto is simple: Find Your Way. Whether you're hitting the backroads for a weekend escape or building the ultimate overland rig for months on the trail, we're here to help you get there. Every part we carry is chosen to give you the reliability, performance, and confidence to go farther and explore more. Load up, point the wheels off the pavement, and find your way—your adventure starts here.
Empowering Your Journey
At Venture Overland Company, we provide a carefully curated selection of top-tier brands and expert guidance to help you enhance your vehicle’s performance. Our community-driven approach ensures every product integrates seamlessly into your adventures, whether upgrading your Jeep, Toyota, or Ford. With our focus on quality, versatility, and outstanding service, we’re more than a store—we’re your partner in every off-road experience.
Quick answers about returns, shipping, warranty and support for orders from Venture Overland Company.
