Description
Roush 2005-2009 Mustang GT/GT500 Cat-Back Exhaust (#403936)
Experience the full power and sound of your S197 with the Roush 2005-2009 Mustang GT & GT500 Cat-Back Exhaust (#403936). Unlike a simple axle-back, this comprehensive cat-back system replaces everything from the catalytic converters back, including the mid-pipes and mufflers. This significantly reduces backpressure throughout the entire exhaust path, allowing your 4.6L or 5.4L V8 to breathe more efficiently and deliver noticeable gains in horsepower and torque.
Constructed from high-quality mandrel-bent stainless steel, this system ensures consistent exhaust velocity and maximum durability against the elements. It features Roush’s signature “hollow-chamber” mufflers, which produce a deep, aggressive muscle car growl without the drone or maintenance issues of traditional packed mufflers. The system is finished with dual 4-inch polished T-304 stainless steel tips, featuring rolled edges and the embossed Roush logo for a premium, high-performance look.
Product Features:
-
Full Cat-Back Performance: Replaces the factory mid-pipes and mufflers for maximum flow and power gains.
-
Signature Roush Tone: High-flow, hollow-chamber design delivers a deep, aggressive roar without internal packing.
-
Mandrel-Bent Tubing: Ensures smooth airflow and eliminates the restrictive kinks found in factory piping.
-
Premium T-304 Tips: Dual 4″ mirror-polished tips with rolled edges and Roush branding.
-
Direct Fitment: Designed specifically for the 2005-2009 Mustang GT (4.6L) and Shelby GT500 (5.4L) using factory mounting points.
Only logged in customers who have purchased this product may leave a review.
Ordering is made easy with our online Checkout.
Many parts are held in stock or available for order and delivery in 10-14 days, subject to availability from our suppliers.
Orders placed before 1pm Monday – Friday have the potential to be despatched the same day, ensuring swift delivery, provided ALL items in your order are in-stock (exceptions apply).
We now offer FREE UK SHIPPING on orders for parts over £50 total.
For orders under £50 or to non-UK destinations, shipping charges are applied at Checkout.
You can check costs for shipping via the Checkout:
Add the item(s) to your Cart
View Cart and select Checkout
Enter your details and delivery address
Shipping costs will automatically update, and you can review your order total before completing the payment.
If you wish to continue shopping, click the logo at the top of the checkout page to return to our Home page.
For orders sent outside the UK (Europe, Rest of the World)
Our website pricing usually includes UK VAT.
Once you proceed to Checkout and update your delivery address to a non-UK destination, pricing in the Checkout will automatically update to exclude UK VAT.
Please continue to browse our website during this or subsequent sessions. In that case, the pricing in our online store may automatically show as excluding UK VAT due to the delivery address now being stored in the Checkout.
IMPORTANT – Orders delivered outside the UK will usually be subject to additional Local Customs and Import Duties. Such charges are the recipient’s responsibility and vary from country to country. Contact your local customs office for more details.
Reviews
There are no reviews yet.