Enhance the aerodynamics and aggressive styling of your 2024+ Ford Mustang S650 GT Performance Pack with this Stealth Rear Diffuser designed for quad-tip exhaust models. Engineered to improve airflow under the vehicle, this diffuser helps manage air exiting from the differential area to the rear of the car while giving the Mustang a more track-inspired appearance.
Unlike purely cosmetic diffusers, this design incorporates a functional aluminum belly pan that helps smooth and direct airflow under the vehicle. The aerodynamic panel works together with durable HDPE diffuser fins to properly diffuse air as it exits the rear of the car.
This diffuser installs as an add-on to the factory rear valance, maintaining a clean OEM-style fit while significantly enhancing the rear-end appearance of the Mustang.
Manufactured in the USA, this diffuser is available in one-piece or three-piece configurations depending on your installation preference.
Features
Designed specifically for 2024–2025 Ford Mustang S650 GT Performance Pack
Compatible with quad-tip exhaust systems
Functional aerodynamic design to improve rear airflow
HDPE diffuser fins and panels with automotive-grade finish
Integrated aluminum belly pan for airflow management
Available in one-piece or three-piece configurations
Installs as an add-on to the factory rear valance
Made in the USA
Product Finish Options
Standard Aluminum Includes HDPE diffuser panel and fins with a raw aluminum attachment plate.
Black Powder-Coated Aluminum Includes HDPE diffuser panel and fins with a black powder-coated aluminum attachment plate for a stealth appearance.
Vehicle Fitment
Compatible with:
2024 Ford Mustang GT Performance Pack
2025 Ford Mustang GT Performance Pack
Not compatible with Mustang Dark Horse
Installation
The diffuser mounts to the factory rear valance and uses most of the existing mounting points.
The Performance Pack version uses two fewer mounting bolts on the main panel
Remaining installation steps follow the standard diffuser installation process
Diffuser fins ship unassembled to reduce shipping size and cost
A Phillips screwdriver or drill is required to attach the fins to the main panel
Pre-drilled holes are included to simplify alignment
Shipping & Lead Time
This product is built to order.
Standard aluminum version: approximately 5–7 business days before shipping
Black powder-coated version: approximately 7–10 business days before shipping
*Note:
The aluminum that attaches the diffuser to the car is NOT a fine finished piece, it will have fine marks and scratches obtained during manufacturing. This part of the diffuser is not viewable when the car is sitting on the ground.
The primary diffuser fins will ship unattached due to sizing and shipping rates, a Philips head screw drive or drill will be needed to assemble just the fins to the main panel. Holes are already in place to line the product up.
Install Guide:
The Mustang GT Performance Pack diffuser will use 2 less bolts for the install on the main panel. The remainder of the install is the same as the video posted below.
Main Panel:
Side Extensions:
Same Process as the 18-23 variant seen below.
Roll over image to zoom inClick on image to zoom
/
You may also like
Recently viewed
Free Shipping
We offer free shipping on CarbonAddons® products for continental U.S. orders over $199.
Satisfied or refunded
We know you’ll love our products! But in case you are not fully satisfied for any reason, simply return the item(s) for an exchange, store credit, or refund within 30 days of purchase using our hassle free return portal.
Top-notch support
Our support team are available via email or chat from Mon-Fri 9am-5pm PST except holidays.
1 Year Warranty
We offer a limited 1 year warranty on defects on all our products.