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MP Concepts Rear Diffuser Fins (15-17 Non-Premium)

Item 398115
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Ship to: Ashburn - 20149
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      Product Information

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


      • Track Inspired Styling
      • Matte Black Finish
      • Durable, Injection Molded ABS Construction
      • Simple Screw On Installation - Drilling Required
      • Designed for Base (Non-Premium) Chassis Packages Only (Trim Levels: 050A/051A/100A/300A)
      • Fits 2015-2017 GT, EcoBoost and V6 Mustangs


      Track Inspired Styling. Add track inspired styling to your Non-Premium 2015-2017 Mustang with a set of MP Concept's Rear Diffuser Fins. These Rear Diffuser Fins are a simple and inexpensive way to alter the exterior appearance of your base model Mustang.

      Durable Construction. Designed using the original OEM CAD data from Ford to ensure a perfect fit, these MP Concept Rear Diffuser Fins were manufactured from an OEM quality injection molded acrylonitrile butadiene styrene (ABS). ABS 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.

      Simple Installation. MP Concept designed their Rear Diffuser Fins to install simply with the supplied Phillips Screws. Pre-drilling into your Mustang's rear lower bumper cover is required for installation. Installation can be completed in less than 30 minutes.

      Application. These MP Concepts Rear Diffuser Fins are designed to fit 2015-2017 V6, EcoBoost and GT Mustangs equipped with the factory Base (Non-Premium) Chassis Packages only (Trim Levels: 050A/051A/100A/300A). Not intended for use on Premium Package models.

      Please Read. If you are having trouble determining what style bumper your Mustang is equipped with please refer to the comparison image above.

      MP Concepts

      Fitment: 2015 2016 2017 Details

      MPN# 398115

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (8)

      Write a Review

      Ratings Summary

      4.2 out of 5 overall rating from 8 customers

      Installation Time: Less than 1 Hour

      • July 25, 2019

        5 2017 GT - Ciro Installation Time: Less than 1 Hour

        Awesome Product

        These fins made a big difference on the non premium bumper as there are not many options... great quality and finish thanks American Muscle

        Helpful (1)
      • July 18, 2019

        2 2017 GT - RaceRedStang

        Don’t mold to the car

        Had to superglue to make these fit. Save your money and don’t buy them.

        Helpful (2)
      • July 09, 2019

        4 2016 V6 - Braedonlynch Installation Time: Less than 1 Hour

        diffuser fins

        Great material in the ABS plastic, very light/durable. Looks really nice but they don't fit perfectly on the bumper. (about a half-inch or so in between some areas of the fin and the bumper.) All in all pretty good product.

        Helpful (1)
      • May 14, 2019

        4 2016 V6 - EdselP Installation Time: Less than 1 Hour

        MP Fins, good but not great

        Nice molded Fins, easy to follow instructions, but not so good fit! After securing them to the bumper per the instructions, these fins wanted to "Sag" at the very top causing a slight gap between the Fin and the bumper. The "shelf" in which the 3M tape goes on is only about 1/8" wide which does nothing for that thin 3M tape stripe to hold it in place. The Screw attachments are farther down than where they should be. The top screw should be angled up. Ore towards the top to keep pressure on the Fin to the Bumper. I had to seal around the outside of the Fin in order to hide the "Gap" that was left over. Looks good from a distance, not so good up close. Will have to take the off and try to figure out a better way of attaching these one day when I have some spare time! Overall, the product is good for the price but could be improved to better Fit the Function!

        Helpful (3)
      • March 26, 2019

        4 2017 GT - Bbowman88 Installation Time: Less than 1 Hour

        Diffuser fins a win for base models.

        Good for us base model owners to add a little something to the gaps in the back bumper. Good quality, fairly easy install. Couldn't get the fitment 100 on two not matter the angle, sort of a gap between the diffuser tip and the body. Still looks really good and different.

        Helpful (2)
      • March 10, 2019

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

        Easy install and looks nice

        Drill and screw. It's that easy. Adds a little something extra to your car's backside for a meaner look.

        Helpful (1)
      • December 18, 2018

        5 2017 GT - JoeJ Installation Time: Less than 1 Hour

        Awesome diffuser fins!

        it makes your car look a bit more agressive from the rear end , looks really nice and get lots of compliments (:<

        Helpful (4)
      • April 04, 2018

        5 2017 GT - AlanH Installation Time: Less than 1 Hour

        Read diffuser

        This product is honestly very easy to install and it gives your pony a great aggressive look.

        Helpful (14)

      Questions & Answers (2 answers)

      2 Top Rated Questions

      Can we get a picture of these installed?

      • The MP Concepts Rear Diffuser Fins are in queue to be installed and photographed and will be updated once these steps have been completed.

      Helpful (8)

      So this application can’t be put on a 2016 GT premium?

      • Correct, these cannot be used with Premium models.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) R1 Diffuser Fin
      • (1) R2 Diffuser Fin
      • (1) L1 Diffuser Fin
      • (1) L2 Diffuser Fin
      • (12) Phillips Screws
      • Installation Guide

      Will It Fit My Mustang

      • EcoBoost - 15, 16, 17
      • GT - 15, 16, 17
      • V6 - 15, 16, 17