MagnaFlow Sys Cat-Back 05-09 Mustang 4.6L Axl-Bak

The MagnaFlow Ford Mustang Race Series Axle-Back Performance Exhaust System 16843 doesn't leave any performance on the table with a race-ready, light weight, dyno-proven design ready to help your 4.6L, 5.4L Ford Mustang take on any pretenders, whether on the track or the street. Exhaust kit 16843 is engineered to produce our powerful, resonant signature exhaust note at Very Aggressive exterior and Aggressive interior sound levels with an axle-back layout that replaces your vehicle's exhaust components from near the rear axle on back. Please check to ensure compliance with local noise regulations. This Ford Mustang exhaust kit features fast-flowing mandrel bent 2.5in. diameter main piping that ends in a Dual Split Rear exit with 3.5in. Polished Welded-On Double Wall Angle Cut Rolled Edge tips. Extensive 3D scanning during development and the use of advanced CNC precision robotic manufacturing techniques ensures that 16843's direct-fit design fits so perfectly that you can easily install the system yourself. The durable, corrosion resistant stainless steel construction of exhaust system 16843 is backed by MagnaFlow's limited lifetime warranty.

Additional Information

Magnaflow Race Series Stainless Axle-Back System

Part Type

Exhaust System Kit

Product Overview

The MagnaFlow 2005-2009 Ford Mustang Race Series Axle-Back Performance Exhaust System 16843 doesn't leave any performance on the table with a race-ready, light weight, dyno-proven design ready to help your 4.6L, 5.4L 2005-2009 Ford Mustang take on any pretenders, whether on the track or the street. Exhaust kit 16843 is engineered to produce our powerful, resonant signature exhaust note at Very Aggressive exterior and Aggressive interior sound levels with an axle-back layout that replaces your vehicle's exhaust components from near the rear axle on back. Please check to ensure compliance with local noise regulations. This Ford Mustang exhaust kit features fast-flowing mandrel bent 2.5in. diameter main piping that ends in a Dual Split Rear exit with 3.5in. Polished Welded-On Double Wall Angle Cut Rolled Edge tips. Extensive 3D scanning during development and the use of advanced CNC precision robotic manufacturing techniques ensures that 16843's direct-fit design fits so perfectly that you can easily install the system yourself. The durable, corrosion resistant stainless steel construction of exhaust system 16843 is backed by MagnaFlow's limited lifetime warranty.

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

• Durable Corrosion-Resistant Stainless Steel Construction
• High Performance Lightweight Design
• Straight pipe-like sound

Important Notice relating to US Domestic Market Trucks & Pickups

Many US-market trucks and pickups are available in multiple cab and bed-length configurations (e.g., Single Cab, Extended Cab, Double/Crew Cab, CrewMax, 5.5ft/6.5ft/8ft beds, etc.). Exhaust system fitment can vary between these chassis versions.

Where available, we list all compatible vehicles, cab types, and bed lengths in the product description. However, depending on your exact configuration, some systems may require optional extension/mid-pipes or minor modification for correct fitment.

Because of these variations, please carefully check your cab configuration and bed length before purchasing. If you are unsure, or if your vehicle has been modified, please reach out to a StreetFX agent.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Exhaust System, Axle-Back, Stainless Steel, Polished Tip, Ford, 4.6L, Kit

MagnaFlow Race Series exhaust systems are designed for the ultimate in high performance—and the loudest, most aggressive race car sound possible! These kits remove the restrictive OEM muffler to virtually eliminate backpressure and maximize exhaust flow. The Race Series units feature all mandrel-bent tubing and 409 stainless steel construction. Various sizes and configurations are available for fitment on specific vehicles. Most models are dual-exhaust, and styles include cat-back and rear axle-back. Increased horsepower and torque are a given; MagnaFlow Race Series systems are recommended for those seeking maximum performance, reduced mass, and an exhaust tone that demands attention. They're covered by a lifetime construction warranty.