Click here: Current Sales and Promotions

589.99 Roush Exhaust Ford Mustang 4.6L/5.4L (2005-2010) 421915 - Redline360
589.99 Roush Exhaust Ford Mustang 4.6L/5.4L (2005-2010) 421915 - Redline360
589.99 Roush Exhaust Ford Mustang 4.6L/5.4L (2005-2010) 421915 - Redline360

Roush Exhaust Ford Mustang 4.6L/5.4L (2005-2010) 421915

Regular price
$649.99
Sale price
$649.99

Free Shipping - Lower 48 US States

13 In Stock - Ships within 1 Business Day

Completely redesigned for maximum performance, the ROUSH Performance Extreme Axle-Back Exhaust gives your 2005-2010 GT (4.6L V8) or 2007-2010 GT500 (5.4L V8) a much more aggressive growl than ever before!

Fitment Information

  • 2005, 2006, 2007, 2008, 2009, 2010 Ford Mustang 4.6L/5.4L v8

Specs & Features

  • Fits 2005-2010 Mustang GT (4.6L V8) & 2007-2010 Mustang GT500 (5.4L V8)
  • ROUSH Extreme Axle-Back Exhaust System
  • Designed for improved performance
  • Straight-through resonator design provides very aggressive tone
  • Piping is 2.5” in size and is made from mandrel-bent 409 aluminized stainless steel for consistent flow
  • Tips are 4” in size and are constructed of chrome-flashed 304 aluminized stainless steel
  • Utilizes OEM hangars and mounting points for easy installation
  • Requires no cutting or welding
  • Can be used with factory Ford rear valance
  • Includes all necessary hardware and instructions
  • Backed by ROUSH’s 3 Year Limited Warranty

    Product Description

    This ROUSH Extreme Axle-Back Exhaust is constructed of 409 aluminized stainless steel piping for its durability, which is also mandrel-bent for consistent flow throughout. The system is then finished off by 2 4” 304 stainless steel chrome-flashed tips (embossed with the ROUSH logo) for superior look as well as superior durability & corrosion resistance. The straight through design is much less restrictive and gives this exhaust a tough, deep sound unique to ROUSH exhausts that lets people know you are driving something that means business.

    This kit uses all stock mounting points and comes with hangars pre-welded to the piping. Absolutely no cutting or custom fabrication is required for a perfect fit, and this kit can be used with the factory Ford rear valance. Like all ROUSH exhausts, this system uses CAD data from the original manufacturer in the design process. This ensures perfect OEM-quality fitment and painless installation.

    Included will be all necessary hardware and instructions for installation. This exhaust also includes ROUSH’s 3-Year Limited Parts Warranty.

            Roush Performance Brand Logo

            Prop 65 Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


            More in this category
            Ford Mustang Exhaust
            Ford Mustang Parts
            Roush Exhaust Kits
          • All Parts
          • Exhaust Systems - Catback, Axleback and Mufflers
          • See all Roush Performance parts

            Reviews on this product


            Ordering from Redline360
            Redline360 is an Authorized Dealer so we only sell authentic and genuine parts and accessories.

            Order updates, tracking and info
            Our goal is your complete satisfaction. Upon ordering, you will receive an email confirmation of your order along with your invoice. You will be able to log into our website 24/7 to check on your order at any time. Your order is processed Monday through Friday from 8am to 6pm PST as soon as it is placed. Once your order ships, we will email you a tracking number so you can track your package.

            Protect your purchase
            Redline360 offers our customers piece of mind! We have partned with Extend to offer you Extend Product Protection and Extend Shipping Protection. Read about each protection that Extend offers to Redline360 customers!

            Multiple distribution points ready to serve you!
            We ship from multiple locations around the United States so you receive your part as quick as possible. Not every warehouse stocks all the same parts, so the closest warehouse to you that has the part in stock is where your order will ship from. We ship from California, Nevada, Indiana, Michigan, Florida, Texas and Pennsylvania.

            Secure Ordering
            We take security seriously! We are never exposed to your credit card information, and it's never stored. Credit card transactions go through the credit card processor directly. We also offer various other payment methods such as PayPal, Affirm Financing (Pay over time), Amazon Pay, Apple Pay and more!

            Any non CARB compliant items can not ship California. We will notify you if we have to cancel your order.

            Some products may be subject to local rules, laws and regulations in certain areas. Always check your local laws to determine legal restrictions. We are not responsible if you buy a product that is not legal in your area.

            For items that have free shipping, free shipping only applies to the lower 48 states.

            Questions? Contact us.

            Actual item may vary from picture