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Roush Rear Valance; Pre-drilled for Back-up Sensors (15-17 GT Premium, EcoBoost Premium)

Item 389792
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      Review & Installation Video

      Product Information

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


      • Formidable Roush R7 Styling
      • Durable OEM-Quality TPO Material
      • OEM Style Stippled Grain Texture
      • Pre-Drilled for Factory Backup Sensors (Not Included)
      • Simple Installation
      • Made in the USA
      • Designed for Use with Roush Quad Tipped Exhaust Systems
      • Fits 2015-2017 GT and EcoBoost Mustangs
      • Designed for Premium Chassis Packages Only (Trim Levels: 200A/201A/400A/401A)


      Formidable Roush Styling. Now you can add a formidable new appearance to your S550 Mustang with a Roush Performance R7 Lower Rear Valance. Designed using the original manufacturer CAD data for a perfect fit, this is the same exact rear valance found on the new special edition Roush Mustangs.

      Quality Construction. Made in the USA at Roush's own plastics manufacturing facility from OEM quality high pressure injection molded high-strength thermal plastic olefin (TPO) for it's long lasting durability, this rear valance features a stippled grained texture for an OEM look and to increase longevity against rock impacts from daily driving.

      Pre-Drilled for Backup Sensors. This Roush Performance Rear Valance is available already pre-drilled to simplify the installation of your stock back-up sensors. If your Mustang is not factory equipped with back-up sensors please use Roush part# 421894.

      Required Upgrade. For proper installation of this Rear Valance you will be required to upgrade to a Roush Quad tipped exhaust system. GT models will need Roush Part# 421920 or 421921, EcoBoost models will need Roush Part# 421922 or 421923.

      Application. This Roush Performance Rear Valance is specifically designed to fit 2015-2017 GT and EcoBoost Mustangs equipped with the factory Premium Chassis Packages only (Trim Levels: 200A/201A/400A/401A).

      Fitment: 2015 2016 2017 Details

      Roush 421919

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (18)

      Write a Review

      Ratings Summary

      3.5 out of 5 overall rating from 18 customers

      Installation Time: Full Day

      Installation Cost: $100-$250

      • August 25, 2019

        4 2016 GT - DrakeP Installation Time: Full Day

        Great look, very aggravating install

        I bought this to put a quad-tip Corsa exhaust on, I expected to maybe spend half an afternoon on this, boy was I wrong. I started at 8:30am and finished at 6:00pm, mostly thanks to the terrible template provided for drilling the screw holes. Only 3 of the screws lined up. I recommend you all to dedicate a day or a professional to do this install. Other than the install though, the look is fantastic, and it compliments the quad tips well.

        Helpful (4)
      • April 20, 2019

        5 2015 GT - ZF Installation Time: Afternoon

        Looks awesome.

        Little scared to cut into the bumper, but take your time and it will end up very nice!!

        Helpful (4)
      • March 27, 2019

        1 2016 GT - S550GT Installation Time: Afternoon

        Worst install

        Template supplied to drill the holes for the diffuser is junk. About 7 out of the 13 screws lined up. And I had the template on perfect. So it was not installed error. Garbage design in my opinion.

        Helpful (4)
      • January 24, 2019

        4 2016 GT - ShaneP Installation Time: Full Day

        Noticeably different

        I will say this install did take some time and patience. I have to say you have to follow the instructions provided by Roush exactly in order for this install to work. Everything lined up perfectly and cutting was nerve-wracking but the template did help make the installation a breeze. Would recommend for the first time user to use a shop. Having the proper tools made this an easy install. Would also recommend having a second set of hands.

        Helpful (4)
      • August 06, 2018

        5 2017 GT - ArmandoH Installation Time: Afternoon

        Must get

        Not 100 perfect fitting but changes the whole rear end with some cords quad tips definitely would recommend this! (It will involve cutting)

        Helpful (8)
      • April 26, 2018

        2 2015 GT - TimM Installation Time: Weekend

        Disappointed install

        I feel this could have been designed much better. 13 little screws that hold it on and then a strip of tape. My biggest issue was the supplied template does not fit properly. You will defiantly have some screws that to not line up. I would say about 7 of the 13 actually were on target. And if you have parking sensors, the cut outs on the template are not big enough. The end result may look okay but I feel they could have made this much better. For me, just to add quad tips, knowing what I know now, I would have not done this and simply left it alone and installed a normal exhaust set up. And some say 3 hours to install.... not in my case. I took my time, and walked away when I would get fruastrated. I have yet to install the exhaust to see about fotment issues with the tips that some have reported.

        Helpful (12)
      • November 28, 2017

        3 2015 EcoBoost - RossM

        Fitment was a little off.

        Seems didin't match up as I thought they should. Ok, not great but I would buy again to fit the quad tips.

        Helpful (12)
      • November 02, 2017

        4 2017 GT - JosephM Installation Time: Full Day

        Great look!

        Not the best instructions, but it gets the job done. Also very nerve racking to cut into the bumper cover. It took me all day to get this to fit right.

        Helpful (12)
      • September 27, 2017

        5 2015 GT - Arabia4mustang Installation Time: Shop Install Installation Cost: $100-$250

        Best looking

        this is by far the best rear valance for mustangs, you need a lot of work to make this one fit.

        Helpful (12)
      • May 06, 2017

        1 2015 GT - JeremyW Installation Time: Afternoon

        Very disappointed about this valance

        Received this valance with much anticipation. It did not come with any directions other than return directions (that should have been a red flag) and a website for placement directions. The paper cut-out that came with the valance was not cut very well to size even though I cut perfectly along the lines. Did not match up to my Corsa exhaust that American Muscle recommended would be a perfect match for this exhaust during my purchase. Exhaust is great but because the Corsa setup has 4.5" tips, rather than 4" tips, the inner muffler tips are touching the new valance and melting it. Very disappointed in the entire process from both Roush and AM. I'm going to go with a GT350 rear bumper and valance which I should have done from the beginning.

        Helpful (15)

      Questions & Answers (10 answers)

      5 Top Rated Questions

      What is different about the Premium Pkg GT vs the Non Premium GT regarding the rear bumper ? My car is not a Premium Pkg GT and I do not have the Trim levels listed on the AM site, so the way I read it, I will not be able to purchase the Roush Rear Valance at all. Correct ? I really was hoping to someday get the Roush Quad tip exhaust to go with it but I guess not. Please let me know if you have any ideas on how to make this work with this Valance or another vendor's Valance so that I could do the Quad tip Roush exhaust. Any ideas would be appreciated.

      • The main difference between a GT/EcoBoost Premium vs a GT/EcoBoost Non-Premium exterior wise is the rear bumper. A Premium Mustang features a "2-Piece" bumper that features a black rear valance panel (Ford part# FR3Z-17F828-AA) that sits between the lower diffuser and the main bumper. The Non-Premium bumper is a 1-Piece Bumper that does not feature that valance piece. Instead of trying to modify a Non-Premium Bumper and the valance to make it work - which there is no type of instructions available, since Roush designed their valance for the Premium Bumper - it would be easier to remove the Non-Premium Bumper and upgrade to the Premium Bumper.

      Helpful (3)

      Will this exhaust fit my 2019 gt non premium?

      • This is just the rear valance and would not come with an exhaust. However, this will not work on the 18-19 models.

      Helpful (1)

      I have a 17 GT premium package with a Corsa sport exhaust. I would like to get the Corsa quad tips, will the Roush rear valance work with this?

      • The Roush Rear Valance is specifically designed to work with the Roush Quad Tip Passive Axle-Back Exhaust, item # 388835, ( and the Roush Quad Tip Passive Axle-Back Exhaust, item # 388836, ( This Valance is not designed to work with the Corsa Exhaust.

      Helpful (1)

      Hello, can You please measure the package of valance? I need a size for a shipping company: width x length x height. Thank you !

      • The Roush Rear Valance package measures 62" x 17" x 17".

      Helpful (0)

      I wanted to know if I am aloud to get separate parts? Cause my driver side side part broke from the Roush rear valance and I won’t be able to fix it. Is there anyway for me to get that part?

      • At this time, we do not offer individual components for the Roush Rear Valance. We would recommend contacting Roush directly, as they may be able to supply you with individual components.

      Helpful (0)
      Post Your Question
      5 More Questions
      Will this fit on a convertible GT? 1 answer
      Why it's not fit for my 2017 gt? and body shops can not do it even need cut a part of my rear bumper 1 answer
      Other than the Roush or Corsa axle backs what other axle backs can be used with this rear valance? Could I use any axle back as long as I use a quad tip exhaust tip? 1 answer
      I have a GT without premium pkg. can I purchase this product? 1 answer
      Can this be put on a V6? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Lower Rear Valance

      Tech Specs

      Will It Fit My Mustang

      • EcoBoost - 15, 16, 17
      • GT - 15, 16, 17

      Fits Premium Chassis Packages only (Trim Levels: 200A/201A/400A/401A)

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