MBRP Armor Plus S4200409BT Cat-Back Exhaust System for 2013-2018 Ford Focus ST 2.0L EcoBoost

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; 3 in.; Incl. Ext. Pipe/Muffler/Resonator/Over Axle Pipe/Tailpipe/Hardware/Dual 4 in. OD Black Tips; Dual Center Outlet; T409 Stainless Steel; 4in. Outside Diameter Tip Included. Cutting Required For Installation.

• Rugged T409 Stainless Steel Construction. Enhanced Exhaust Tone. Improved Exhaust Flow. Smooth Mandrel Bent Tubing. Utilizes Factory Mounting Points.
• 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

Upgrade your Ford Focus ST with the MBRP Armor Plus S4200409BT Cat-Back Exhaust System, engineered for improved exhaust flow, responsive performance, and a refined exhaust tone. This 3-inch system is constructed from corrosion-resistant T409 stainless steel, providing dependable protection against penetrating rust while offering a practical solution for everyday performance driving.

Mandrel-bent tubing helps maintain a smooth interior path through each bend, reducing restrictions and supporting improved horsepower, torque, throttle response, and lower exhaust gas temperatures. The system uses factory mounting points and OEM hangers for a straightforward installation, although cutting is required. A dual center outlet design with included black stainless steel tips gives the Focus ST a clean, performance-oriented appearance and mellow exhaust note.

The MBRP Armor Plus S4200409BT includes the extension pipe, muffler, resonator, over-axle pipe, tailpipe, hardware, and dual 4-inch outside-diameter black tips. Its bolt-on design is backed by a limited lifetime warranty. 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 warranty unless the part or system fails completely. This product is intended for the listed Ford Focus ST applications and is not CARB approved.

Key Product Specifications & Technical Data

• Brand: MBRP
• Part Number: S4200409BT
• Series: Armor Plus
• System Type: Cat-back exhaust system
• Inlet Tubing Diameter: 3 inches
• Material: T409 stainless steel
• Outlet Configuration: Dual center outlet
• Tip Finish: Black stainless steel, 4-inch outside diameter

What's Included

Extension pipe, muffler, resonator, over-axle pipe, tailpipe, dual black stainless steel tips, and installation hardware.

Fitment

Fits 2013-2018 Ford Focus ST equipped with the 2.0L EcoBoost engine. Cutting is required for installation. Professional installation is recommended.

Features:

• T409 Stainless Steel Construction: Corrosion-resistant material provides durable protection against penetrating rust and is easy to clean.
• Mandrel-Bent Tubing: Smooth bends help maximize exhaust flow without the rippling associated with conventional bends.
• Performance Improvements: Supports increased horsepower, torque, throttle response, and lower exhaust gas temperatures.
• Dual Center Outlet Design: Includes dual 4-inch outside-diameter black stainless steel tips for a clean appearance and mellow exhaust note.
• Factory Mounting Compatibility: Utilizes OEM hangers and factory mounting points for a practical installation.
• Bolt-On Design: Includes the required exhaust components and hardware, with cutting required for installation.
• Limited Lifetime Warranty: Provides long-term warranty coverage from MBRP, subject to applicable terms and conditions.

Fitments:
2013 Ford Focus ST
2014 Ford Focus ST
2015 Ford Focus ST
2016 Ford Focus ST
2017 Ford Focus ST
2018 Ford Focus ST

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