MBRP S5018409 Armor Plus Cat-Back Exhaust System for 2003-2007 Chevrolet Silverado and GMC Sierra 1500

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 performance exhaust system that sounds great. Armor Plus Cat Back Exhaust System; 2.5 in.; Incl. Extension Pipe/Muffler/Over Axle Pipes/Tailpipes/Hardware/3.5 in. OD Tips; Dual Split Side Exit; T409 Stainless Steel; 3.5in. Outside Diameter Tip Included.

• Rugged T409 Stainless Steel Construction. Improved Flow and Lower Exhaust Gas Temperatures. Hardware Included. MBRP Signature Styling and Sound.
• Stainless Steel Tips Are Included
• Improved Torque And Horsepower
• Lower Exhaust Gas Temperatures
• Increased Throttle Response
• Limited Lifetime Warranty
• Utilizes OEM Hangers
• Mellow Exhaust Note
• Bolt On Design

The MBRP S5018409 Armor Plus cat-back exhaust system is designed for select 2003-2007 Chevrolet Silverado 1500 and GMC Sierra 1500 applications with 4.8L or 5.3L engines and extended cab or crew cab, short-bed configurations. This bolt-on system includes the extension pipe, muffler, over-axle pipes, tailpipes, hardware, and stainless steel tips for a complete exhaust upgrade. Its dual split side-exit layout provides a clean, purposeful appearance while delivering the signature MBRP sound.

Built from corrosion-resistant T409 stainless steel, the MBRP Armor Plus system offers dependable protection against penetrating rust and is backed by a limited lifetime warranty. Mandrel-bent tubing maintains a smooth internal passage through each bend, helping improve exhaust flow, reduce exhaust gas temperatures, and support stronger torque, horsepower, and throttle response. The system is engineered to utilize factory hangers, simplifying installation and maintaining proper component alignment.

The included 3.5-inch outside-diameter stainless steel tips complete the system with MBRP styling and added durability. Its mellow exhaust note is suited to drivers who want improved performance and a refined sound without excessive cabin noise. T409 stainless steel is resistant to penetrating rust, but exposure to winter conditions, heavy salt air, and road treatments may accelerate corrosion; these conditions are not covered by the manufacturer’s warranty unless the part or system fails completely. This product is not CARB approved and may not be legal for use in emissions-controlled areas. Verify local regulations and vehicle compatibility before installation.

Key Product Specifications & Technical Data

• Brand: MBRP
• Part Number: S5018409
• Series: Armor Plus
• System Type: Cat-back exhaust
• Material: T409 stainless steel
• Pipe Diameter: 2.5 inches
• Exit Configuration: Dual split side exit
• Tip Diameter: 3.5 inches outside diameter

What's Included

Extension pipe, muffler, over-axle pipes, tailpipes, stainless steel exhaust tips, installation hardware, and components required for the specified bolt-on application.

Fitment: Select 2003-2007 Chevrolet Silverado 1500 and GMC Sierra 1500 models with 4.8L or 5.3L engines, extended cab or crew cab, and short-bed configurations. Confirm exact vehicle details and exhaust layout before ordering.

Features:

• Rugged T409 stainless steel construction helps resist penetrating rust and supports long-term durability.
• Mandrel-bent 2.5-inch tubing promotes smoother exhaust flow, improved throttle response, and lower exhaust gas temperatures.
• Dual split side-exit configuration with included 3.5-inch stainless steel tips provides MBRP styling and a mellow exhaust note.
• Bolt-on design utilizes OEM hangers and includes installation hardware for a straightforward installation.

Fitments:
2003 Chevrolet Silverado 1500 Base
2003 Chevrolet Silverado 1500 LS
2003 Chevrolet Silverado 1500 LT
2003 Chevrolet Silverado 1500 WT
2003 GMC Sierra 1500 Base
2003 GMC Sierra 1500 SL
2003 GMC Sierra 1500 SLE
2003 GMC Sierra 1500 SLT
2003 GMC Sierra 1500 WT
2004 Chevrolet Silverado 1500 LS
2004 Chevrolet Silverado 1500 LT
2004 Chevrolet Silverado 1500 Z71
2004 GMC Sierra 1500 SLE
2004 GMC Sierra 1500 SLT
2005 Chevrolet Silverado 1500 LS
2005 Chevrolet Silverado 1500 LT
2005 GMC Sierra 1500 SLE
2005 GMC Sierra 1500 SLT
2006 Chevrolet Silverado 1500 LS
2006 Chevrolet Silverado 1500 LT
2006 GMC Sierra 1500 SL
2006 GMC Sierra 1500 SLE
2006 GMC Sierra 1500 SLT
2007 Chevrolet Silverado 1500 Classic Hybrid
2007 Chevrolet Silverado 1500 Classic LS
2007 Chevrolet Silverado 1500 Classic LT
2007 Chevrolet Silverado 1500 Classic WT
2007 GMC Sierra 1500 Classic Hybrid
2007 GMC Sierra 1500 Classic SL
2007 GMC Sierra 1500 Classic SLE
2007 GMC Sierra 1500 Classic SLT
2007 GMC Sierra 1500 Classic WT

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1