Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $15,000!! Enter Now
Coronavirus: We are Open For Business, Prioritizing health and safety Learn More

SpeedForm GT350R Style Rear Spoiler; Primed (15-20 Fastback)

Item 393624
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $329.99 You Save 9% ($30.00)
Our Price


FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

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

      Product Information

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


      • GT350R Pedestal Style Rear Spoiler
      • Aggressive Appearance Upgrade
      • Durable, Lightweight ABS Construction
      • Drilling Required for Installation
      • Ships Unpainted - Primed
      • Fits All 2015-2020 Fastback Mustangs


      Shelby GT350R Styling. Add the aggressive track appeal of the mighty Shelby GT350R to your very own Fastback Pony with this great looking GT350R Pedestal Style Rear Spoiler from SpeedForm. This GT350R Style Spoiler not only enhances the appearance of your S550 Mustang, but it will also enhance its aerodynamics as well. SpeedForm's GT350R Style Spoiler will be sure to set your Pony apart from the rest of the herd.

      Superior Quality. Manufactured from blow molded acrylonitrile butadiene styrene (ABS) material, this GT350R Style Rear Spoiler was made to OEM specifications for a perfect fit. ABS is an extremely strong material known for its light-weight, superior durability and impact resistance. Unlike some other rear wing options on the market, this GT350R Spoiler won't chip or crack like fiberglass and will last for many years to come.

      Drilling Required. This GT350R Style Spoiler will require some drilling for installation, templates are included to help find the proper locations. All necessary hardware is also included to complete this rear end upgrade. If your Mustang is equipped with a factory spoiler, the original holes will be exposed after installing this GT350R Wing.

      Application. This SpeedForm GT350R Style Rear Spoiler is designed to fit all 2015-2020 Fastback Mustangs including the V6, EcoBoost, GT and GT350 models. It is not compatible with Convertible models.

      Technical Notes. This rear deck lid spoiler ships unpainted. AmericanMuscle recommends professional installation of all body parts. We also recommend test fitting these products before they are painted.


      Fitment: 2015 2016 2017 2018 2019 2020 Details

      MPN# 393624

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (39)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 39 customers

      Installation Time: Full Day

      Installation Cost: $250-$500

      • April 01, 2020

        5 2015 EcoBoost - Rood


        Shipment came in pretty fast! the install was amazing. it comes in primed so i had to get a paint job, before installing it but it. was worth the price!!

        Helpful (0)
      • February 19, 2020

        5 2018 GT - GFlores Installation Time: Less than 1 Hour

        Super style change

        Amazing view on my 18' mustang Totalli look change To easy to install

        Helpful (1)
      • December 15, 2019

        5 2017 EcoBoost - 17EcoBeast Installation Time: Afternoon


        Fits Ecoboost with a bit of work however got it installed at the shop and I must say it gives a good look to the Convertible. I’m very satisfied with the results!!

        Helpful (0)
      • November 08, 2019

        5 2015 EcoBoost - AustinH Installation Time: Less than 1 Hour

        Love it!!

        I really love the look of this spoiler! It's bold without being to much! Adds a very aggressive look! Can be expensive! I didn't find any place that would paint it for less that $200. But i definitely think it was worth it

        Helpful (0)
      • September 01, 2019

        5 2019 GT - JoseE Installation Time: Full Day


        Look fine.Better that i expested.Most fill original hole END paint.

        Helpful (1)
      • May 27, 2019

        5 2016 GT - Yesir Installation Time: Afternoon


        It was a good part but the only thing that was bad was the factor spoiler left two holes and are really noticeable

        Helpful (1)
      • May 27, 2019

        5 2016 EcoBoost - Alec Installation Time: Afternoon

        Fits convertibles (with some work)

        I got this to work on my 2016 Convertible, and I’m obsessed. Love this spoiler.

        Helpful (2)
      • February 28, 2019

        5 2017 GT - LionelL Installation Time: Shop Install Installation Cost: $250-$500


        Ive had a tremendous up turn in the look of the car from the stock one.

        Helpful (1)
      • February 21, 2019

        5 2015 GT - JonathanH

        Look fantastic

        Everything I could ask for and a great price. Can in one piece with zero damage.

        Helpful (2)
      • January 03, 2019

        5 2016 GT - LewDale3

        Absolutely love it

        Changed the way I look at my car wouldn’t want a different spoiler!

        Helpful (4)

      Questions & Answers (25 answers)

      5 Top Rated Questions

      If I have a factory spoiler (black accent package) will this use the factory holes? Or at least cover them up?

      • If your Mustang is equipped with a factory spoiler, the original holes will be exposed after installing this spoiler.

      Helpful (10)

      Why won’t this fit a convertible

      • This spoiler is designed for the 15-18 Fastback models only. Unfortunately it will not work with your convertible due to some differences in the body of the vehicle.

      Helpful (7)

      Is this the same dimensions as the carbon fiber gt350 style also offered on AM? From pictures this one looks lower than the carbon fiber one and stock gt350r.

      • The SpeedForm GT350R Style Spoiler is different the the Carbon fiber GT350R Style spoiler, as that one is manufactured by Anderson Composites. The Anderson Composites GT350R Style Rear Spoiler is significantly taller in the center compared to the SpeedForm spoiler.

      Helpful (3)

      What color is it if its primed? Is it a gloss black? Also can it be left unpainted but installed? Thank you.

      • It would be a grey primer finish, this would need to be painted or at least clear coated for protection from chips and scratches.

      Helpful (2)

      Does it come with a template to drill holes if your mustang comes without a spoiler like mine?

      • A drilling template will be included with this spoiler.

      Helpful (1)
      10 More Questions
      what size are those you have to drill 1 answer
      what size are the holes you have to drill 1 answer
      Is there anyway I can just buy the box to ship my gt350r spoiler? 0 answer
      I understand that this will leave holes if you replace on a decklid WITH the factory spoiler. My question is it that all 4 factory holes, or just the 2 centered ones from the outside of the decklid? 0 answer
      Is there any way to get a copy of the drilling template? 1 answer
      Does this wing flex while going down the road or over bumps? 0 answer
      is there any way to cover the factory holes with another smaller spoiler that could go in the middle ? 1 answer
      Would this wing fit on an S197 Mustang with some modification? 1 answer
      Is there anyway you can take a picture of this wing next to a 2018 Performance package spoiler? Or let me know the dimensions, height etc etc. it looks very similar to the 18 PP spoiler minus the center supports. I’m trying to compare the two parts Thank you. 1 answer
      What is the pros and cons between the material (ABS) of this spoiler vs the Anderson Composite spoiler (carbon fibre)? Resistance to cold/hot? etc... 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Rear Wing Spoiler
      • Mounting Hardware

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 19, 20
      • EcoBoost - 15, 16, 17, 18, 19, 20
      • GT - 15, 16, 17, 18, 19, 20
      • GT350 - 15, 16, 17, 18, 19, 20
      • GT350R - 15, 16, 17, 18, 19, 20
      • GT500 - 20
      • V6 - 15, 16, 17

      This GT350R Style Rear Spoiler fits Fastback models only.