What is the main difference between an axle-back and a cat-back exhaust system?

An axle-back exhaust system replaces only the muffler and tailpipe section, typically from the rear axle back. A cat-back system replaces everything from the catalytic converter(s) back, including the mid-pipe, muffler, and tailpipe.

Does this Roush axle-back exhaust require any modifications to install?

No, this Roush axle-back exhaust is designed as a direct bolt-on replacement. It utilizes the factory exhaust hangers and mounting points, meaning no cutting or welding is required for installation.

What material are the Roush axle-back exhaust tips made of?

The exhaust tips are made of stainless steel and feature a black coating for a custom appearance. They are 4 inches in diameter.

Roush Axle Back Exhaust Black Tip 421834-BLK - 2015-2017 Mus

Name: Roush 15-17 Mustang GT Black Tip Axle Back Exhaust
Brand: Roush
SKU: roush-roush-15-17-mustang-gt-black-tip-axle-back-exhaust-t14-850628
Price: 870.39 USD
Availability: BackOrder

Roush 15-17 Mustang GT Black Tip Axle Back Exhaust

$870.39

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Roush 15-17 Mustang GT Black Tip Axle Back Exhaust

Key Features

Fits 2015-2017 Ford Mustang GT.
Constructed from durable 409-grade stainless steel for longevity.
Features 4-inch black-coated stainless steel exhaust tips.
Designed to bolt directly onto the factory exhaust hangers.
Provides a deeper, more aggressive exhaust tone compared to stock.
Includes mufflers and tips for a complete axle-back replacement.

This axle-back exhaust system is specifically designed for the 2015 through 2017 Ford Mustang GT models.

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Product Details

This Roush axle-back exhaust system is made for the 2015 through 2017 Ford Mustang GT. It replaces the factory muffler and tailpipe section, giving your Mustang a more aggressive sound and a custom look. If you're looking to change the exhaust note on your S550 Mustang GT without a full cat-back system, this axle-back is a solid option.

Roush builds these axle-backs with durable 409-grade stainless steel to resist corrosion and ensure they hold up over time. The system features 4-inch black-coated stainless steel tips that exit through the factory valence, providing a clean, performance-oriented appearance. When installed, you can expect a deeper, more resonant exhaust tone that's noticeably louder than stock, especially under acceleration, but still comfortable for daily driving. The black tips add a custom touch that stands out.

Installation is designed to be a direct bolt-on replacement for the factory axle-back section, meaning no welding or cutting is required. You'll be using the factory hangers and mounting points. This kit includes everything you need to install the axle-back mufflers and tips, making it a straightforward upgrade for your Mustang GT.