What is the main difference between this Roush axle-back and a full cat-back system?

An axle-back system replaces only the mufflers and tips at the rear of the exhaust system. A cat-back system replaces everything from the catalytic converter back, including the mid-pipe and mufflers.

Will this exhaust kit require welding for installation?

No, this is an axle-back exhaust kit designed for direct bolt-on installation. All necessary hardware and instructions are included.

How should I care for the chrome-flashed stainless steel tips?

To maintain the shine and prevent corrosion on the chrome-flashed tips, clean them regularly with mild soap and water. Avoid abrasive cleaners or tools that could scratch the finish.

Roush 2005-2010 Ford Mustang V8 Extreme Axle-Back Exhaust Kit

Specifications

Brand: Roush
Part #: 421915
UPC: 844764005716

Roush 2005-2010 Ford Mustang V8 Extreme Axle-Back Exhaust Kit

Name: Roush 2005-2010 Ford Mustang V8 Extreme Axle-Back Exhaust Kit
Brand: Roush
Price: 799.99 USD
Availability: InStock

$799.99

Only 4 left in stock

Fits 2005-2010 Ford Mustang GT/GT500. Roush Extreme Axle-Back Exhaust Kit for a much more aggressive growl.

Key Features

Fits 2005-2010 Ford Mustang GT and GT500.
Constructed from durable 409 aluminized stainless steel piping.
Mandrel-bent tubing ensures consistent exhaust flow.
Features 304 stainless steel chrome-flashed exhaust tips with Roush logo.
Straight-through muffler design creates a less restrictive path for exhaust gases.
Produces a tough, deep, and aggressive exhaust sound.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits this vehicle

Ford Mustang 2005-2010

Product Details

Roush is known for making performance parts that really let your Mustang breathe and sound the part. This Extreme Axle-Back Exhaust kit is designed specifically for the 2005-2010 Ford Mustang GT and GT500 models, giving your V8 engine a much more aggressive growl than the stock setup. If you're looking to make your Mustang's exhaust note truly distinctive, this is a solid option.

This system is built with 409 aluminized stainless steel for the main piping. This material is chosen for its durability, and the pipes are mandrel-bent to ensure consistent airflow all the way through, which helps with performance. The tips are where this kit really shines visually and functionally; they're made from 304 stainless steel and then chrome-flashed for a superior look that resists corrosion and holds up well over time. The embossed Roush logo on the tips adds a nice touch. The internal design is a straight-through setup, meaning it's much less restrictive than factory mufflers, leading to that tough, deep sound that's a signature of Roush exhausts.

Everything you need to get this installed is included in the box, along with instructions. This kit replaces the rear mufflers and tips, making it a straightforward upgrade for those wanting a more pronounced exhaust note and a custom look.