Reliability Backed for a lifetime- Armor Plus Series exhaust systems are crafted from corrosion-resistant T409 Stainless Steel - a value-oriented material designed to protect from penetrating rust and will stand up to almost anything you can throw at it. T409 Stainless Steel tubing is easy to clean. If you're looking for a performance exhaust system with a Lifetime Warranty, this is probably the one for you. If you don't find yourself faced with lots of precipitation and salt, this is all you're ever going to need. All of the tubing is mandrel bent for maximum exhaust flow. Mandrel bending ensures no rippling in the bends. The end result is that it gives you more fresh air inside your engine's cylinders, allowing it to produce more power and improve vehicle performance and longevity. It's important to note that T409 Stainless Steel is resistant to penetrating rust but winter conditions, heavy salt air, and road treatments might accelerate the corrosion process, these conditions are not covered by MBRP's manufacturer warranty unless the part or system fails completely. When it comes to a performance exhaust system, choose the MBRP ARMOR PLUS Series for a reliable option backed for a lifetime. MBRP, Stand out from the crowd with a perfromance exhaust system that sounds great. T409 Stainless Steel 3 Inch Cat-Back, Pre-Axle Dual Side Exit with Mirror Polished Tips Fitments: 2009-2018 Chevrolet/GMC Silverado/Sierra 1500, 4.3L V6, 5.3L V8 2019 Chevrolet/ GMC Limited/LD Silverado/Sierra 1500 4.3L V6, 5.3L V8 One-Piece Driveshafts Only Excludes Regular Cab Features: Bolt-on Installation Enhanced Exhaust Tone Smooth Mandrel Bent Tubing Up To 7ft.lbs Torque Gains Gains Of 1 Horsepower 4 inch OD Tip Included Smoother Exhaust Flow Rugged T409 Stainless Steel Construction MBRP's Armor Plus Series is the performance exhaust of choice for the enthusiast who needs a system that can take anything that the road throws at it. This system's rugged sixteen gauge T409 Stainless Steel construction can be counted on to withstand everything from salt to rocks, tar to grime. Built to Perform-MBRP's performance exhaust systems are built to perform. Designed to maximize exhaust flow and minimize exhaust temperatures. Every system we sell has been built to the most exacting standards in the industry.