With thirty-five years of experience, Flowmaster has specialized in automotive science and various patent protecting technologies. Ushering a new standard, the brand has shown a revolutionary development in the past few decades. The brand has an aim to design the best automotive products, delivering high-end performance. The highest quality of exhaust products, advanced manufacturing techniques and unwavering dedication toward customers are what set this brand apart from others. Flowmaster Performance has embraced innovative technologies to improve its product line. From its FlowFx straight-through design to legendry chambered, every product delivers outstanding performance.
Flowmaster's American Thunder cat-back exhaust system for the 2014-2018 GM 1500 trucks (also fits 2019 classic models) is perfect for the person looking for an aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR/DOS (Dual Out Rear/ Dual Out Side) emissions-legal system, for the Crew Cab and Double Cab models with 4.3L V6 or 5.3L V8 engine, features a stainless steel Super 40 Series muffler and dual 2.50" stainless steel mandrel bent tailpipes. The system finishes off with polished 3.50" stainless steel tips. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.
- Stainless Steel Construction.
- Great Performance Tone.
- Patented Delta Flow Technology.
- Lifetime Limited Warranty.
Cat-back System 409S - Dual Rear/Side Exit - American Thunder - Aggressive Sound.
Fits 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models with 4.3L V6 or 5.3L V8 gas engine. Does Not Fit Crew Cab 2WD with 2 Pc Driveshaft. Also fits 2019 Classic Models. Professional installation by a licensed mechanic required.
Fitment & Application:
|Possibly special-order. Call or email to check stock.
|California Prop 65 Warning
This product can expose you to chemicals including lead and chromium (hexavalent compounds) which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov