Installation Time
(approx) 1 Hour
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
No guide available for this part yet.
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Rear Diffuser (15-17 Mustang w/ Roush Rear Valance)Find parts that fit my vehicle
Item 438179
Our Price
$509.99 kit
Military, Medical & First Responders
$25.50 Available in AM Cash Rewards.
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- Price Includes Free Shipping Anywhere In The US
- All Aero Is Designed, Produced, And Shipped Out Of California
- Made Out Of 6mm Thick Aluminum Composite Material (ACM)
- ACM Offers Excellent UV Resistance, Weatherability, And Corrosion Protection While Being Easy To Clean To Maintain A Sleek And Brilliant Appearance
- Precisely Cut By Professional Grade CNC Machine
- Laser Engraved In-House To Ensure A Consistent, High Quality Finish
- Can Be Installed By Purchaser Although Professional Installation Is Recommended
- Designed To Fit With Roush Rear Valence
- Recommend Removing Splash Guards For Better Fitment
- Includes Main Panel, Main Panel Fin (x2), Driver Side Panel, Passenger Side Panel, Carbon Fiber PETG Mounting Brackets, Stainless Steel Hardware, Installation Guide
- Tools Needed: Drill, Screwdriver, ¼” Wrench, 10mm Wrench
- Fits 2015-2017 Mustang w/ Roush Rear Valence
Description
Rear Diffuser Upgrade. The Rear Diffuser enhances the aerodynamic performance of the vehicle by managing airflow underneath the car to reduce drag and increase stability at higher speeds. It is designed to complement the existing rear valence for a more aggressive and functional look while aiding vehicle handling.
Construction and Appearance. Made from 6mm thick Aluminum Composite Material (ACM), the diffuser provides superior UV resistance, weatherability, and corrosion protection. The material maintains its sleek and brilliant appearance through precise CNC cutting and in-house laser engraving that ensures a consistent, high-quality finish.
Installation. Installation can be performed by the purchaser, but professional installation is recommended for optimal fit and finish. Basic tools including a drill, screwdriver, ¼” wrench, and 10mm wrench are required, with some drilling potentially necessary for mounting.
Application. Specifically designed to fit 15-17 Mustang with Roush Rear Valance.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Main Panel
- (2) Main Panel Fins
- (2) Side Panels
- Mounting Brackets
- Hardware
- Installation Guide
Tech Specs
4.8
Customer Reviews (14)
Questions & Answers
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Will It Fit My Mustang
- EcoBoost - 15, 16, 17
- GT - 15, 16, 17
