Description
Upgrade the rear styling and aerodynamic profile of your 2015–2017 Ford Mustang GT or EcoBoost Premium with this Stealth Rear Diffuser designed for dual exhaust models. Engineered to enhance airflow exiting from underneath the vehicle, this diffuser adds a race-inspired appearance while maintaining compatibility with the factory rear valance.
The system incorporates a functional aluminum belly pan designed to smooth airflow from the differential area before directing it through the HDPE diffuser fins. This combination helps manage underbody airflow while delivering a more aggressive performance look.
Constructed from durable HDPE with an automotive-style finish, the diffuser is designed to install as an add-on to the factory rear valance, allowing Mustang owners to upgrade their rear aerodynamics without replacing the entire bumper.
Each diffuser is built to order in the United States and is available in one-piece or three-piece configurations depending on your preferred setup.
Note: The 2015-2017 Mustang has 2 different types of rear valances, the Premium and Non-Premium. The biggest tell on which your vehicle has in the center fins on the valance between the exhaust and the rear brake light.
Features
- Designed for 2015–2017 Ford Mustang GT & EcoBoost Premium
- Compatible with dual exhaust setups
- Functional rear diffuser design
- Integrated aluminum belly pan for airflow management
- HDPE diffuser panel and fins
- 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:
- 2015 Ford Mustang GT Premium
- 2016 Ford Mustang GT Premium
- 2017 Ford Mustang GT Premium
- 2015–2017 Ford Mustang EcoBoost Premium
Requirements: Vehicle must have dual exhaust tips (one exhaust tip per side)
Installation
The diffuser installs directly to the factory rear valance.
Installation notes:
- Diffuser fins ship separate from the main panel for shipping efficiency
- Assembly requires a Phillips screwdriver or drill
- Pre-drilled mounting 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 surface marks or manufacturing scuffs. This portion of the diffuser is not visible once installed on the vehicle.
Install Guide:
Assembly:
Main Diffuser & Side Extension Install: