Description
Enhance the rear styling and aerodynamic performance of your 2018–2023 Ford Mustang EcoBoost with this Stealth Rear Diffuser designed for dual exhaust models. This diffuser adds a more aggressive performance appearance while helping manage airflow exiting from underneath the vehicle.
Unlike cosmetic-only diffusers, this design incorporates a functional aluminum belly pan that helps smooth airflow beneath the vehicle before directing it through the HDPE diffuser fins. The result is improved airflow management while maintaining a clean motorsport-inspired look.
The diffuser installs as an add-on to the factory rear valance, allowing Mustang owners to upgrade the rear aerodynamics without replacing the entire bumper. Available in one-piece or three-piece configurations, this diffuser provides flexibility depending on your installation preference.
Proudly manufactured in the United States, each unit is built to order using durable materials designed for long-term performance.
Features
- Designed for 2018–2023 Ford Mustang EcoBoost
- Compatible with dual-tip exhaust systems
- Functional rear aerodynamic diffuser design
- HDPE diffuser panel and fins
- Integrated aluminum belly pan for airflow smoothing
- Installs as an add-on to the factory rear valance
- Available in one-piece or three-piece configuration
- Made in the USA
Product Finish Options
Standard Aluminum
- HDPE diffuser panel and fins
- Raw aluminum mounting plate
Black Powder-Coated Aluminum
- HDPE diffuser panel and fins
- Black powder-coated aluminum mounting plate
Vehicle Fitment
Compatible with:
-
2018-2023 Ford Mustang EcoBoost
-
EcoBoost Premium models
Requirements:
- Vehicle must have dual exhaust outlets (one tip per side)
- Factory rear valance required for proper mounting
Installation
The diffuser installs directly to the factory rear valance.
Installation notes:
- Diffuser fins ship separate from the main panel to reduce shipping size
- Assembly requires a Phillips screwdriver or drill
- Pre-drilled holes allow easy alignment of the diffuser fins
Shipping & Lead Time
This product is built to order.
- Standard aluminum version: approximately 5–7 business days before shipment
- Black powder-coated version: approximately 7–10 business days before shipment
Note
The aluminum mounting plate is a structural component and may show minor marks or surface scratches from the manufacturing process. This portion of the diffuser is not visible once installed on the vehicle.
Install Guide:
Main Diffuser:
Side Fins:
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