FREE 1 to 3-Day Delivery on Orders $119+ Details

Talk to a Mustang Sales Tech
1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Black Friday is Here! Shop Early Deals >
Get $80 Off Redeem Now >

Find Rear Diffusers & Valances for your Mustang

Roush Rear Valance Aero Foil Kit (18-23 Mustang GT; 19-23 Mustang EcoBoost w/ Active Exhaust)Find parts that fit my vehicle

Item 404870
Product Image
Roush Rear Valance Aero Foil Kit (18-23 Mustang GT; 19-23 Mustang EcoBoost w/ Active Exhaust)
Video Thumbnail
Review & Install - Roush Rear Valance Aero Foil Kit Video   See All Product Videos (1)
Verify parts fit and get product recommendations.
Mustang Sales Techs: Connect Now M-F 8:30A-11P, Sat-Sun 8:30A-9P
Call now 1-877-887-1105 Chat Now
$125.99
65 Reviews 8 Answers
On Sale

-10% $125.99 pair Was $139.99

to: 43215
Please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
Add to Cart
Save for later
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

    Loading Indicator

    Frequently Bought Together

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation

      Features

      • Aggressive Track Inspired Styling
      • Increases Rear Downforce
      • Injection Molded TPO Construction
      • Black Stipple OEM Style Finish
      • Simple Installation - Minor Drilling Required
      • Fits 2018-2023 GT Mustang and 2019-2023 EcoBoost Mustangs with Active Exhaust and Factory Quad Tips

      Description

      Track Inspired Styling. Add aggressive track inspired styling to your 2018-2023 GT Mustang by installing a Roush Rear Valance Aero Foil Kit. This Rear Valance Aero Foil attaches to your GT's rear diffuser to considerably alter the overall appearance of your Mustang's rear end. This Roush Rear Valance Aero Foil Kit is a great way to set your 2018-2023 GT Mustang apart from all the rest.

      Functional. Roush designed their Rear Valance Aero Foil Kit employing techniques used in professional racing. This Rear Valance Aero Foil will improve your 2018-2023 Mustang's aerodynamics by separating airflow beneath the car, allowing a smaller portion to follow the under-body contours, increasing rear downforce.

      Roush Quality. Roush manufactures their Rear Valance Aero Foil Kit in the USA at their own plastics manufacturing facility from OEM quality high pressure injection molded high-strength thermal plastic olefin (TPO) using the original OEM CAD data from Ford to ensure a perfect fit. TPO is an extremely strong material known for its light-weight, superior durability and impact resistance - making it perfect to withstand the hazards of daily driven vehicles. The Grille is then completed in a black, stipple textured finish for aggressive good looks.

      Simple Install - Drilling Required. Roush designed their Roush Rear Valance to install utilizing both double sided automotive tape and mechanical fasteners, so drilling will be required for installation. Roush provides the required mounting hardware and installation instructions. Installation should take about an hour to complete.

      Recommended Upgrade. Complete your 2018-2023 Mustang's aggressive track inspired appearance by installing Roush's High-Flow Lower Grille Opening Kit (part# 422081) and 3-Piece Aero Chin Spoiler (part# 422082) - sold separately.

      Application. This Roush Rear Valance Aero Foil Kit is designed to fit 2018-2023 GT Mustang and 2019-2023 EcoBoost Models with the Active Exhaust and factory quad tips only. Does not fit V6 or Shelby GT350.

      Fitment:

      Details

      Roush 422085

      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) Driver Side Rear Diffuser
      • (1) Passenger Side Rear Diffuser
      • (2) Brackets
      • (6) Self-Tapping Screws
      • (4) Bolts
      • Double-Sided Tape
      • Instructions
      4.9

      Customer Reviews (65)

      Questions & Answers (8)

      Post Your Question

      Will It Fit My Mustang

      • EcoBoost - 19, 20, 21, 22, 23
      • GT - 18, 19, 20, 21, 22, 23