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MP Concepts GT350 Style Rear Bumper and Diffuser Kit; Unpainted (15-17 All)

Item 397417
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      Review & Installation Video

      Product Information

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


      • Intimidating Shelby GT350 Inspired Styling
      • Rear Fascia Kit
      • Not Prepped for Backup Sensors - No Pre-drilled Holes
      • Constructed from Durable OEM Quality Polypropylene
      • Includes Premium Style Rear Fascia and Lower Diffuser
      • Straight Forward Installation
      • Ships Unpainted
      • Fits All 2015-2017 Mustangs


      Intimidating Shelby GT350 Styling. Revamp the exterior styling of your S550 Mustang with this GT350 Style Rear Bumper and Diffuser Kit from MP Concepts. MP Concepts Rear Fascia looks the same as the premium style rear bumper, while the Diffuser closely mimics that of the Shelby GT350 to give your base model Mustang a more intimidating appearance.

      Quality Construction. MP Concepts manufactures their premium style Rear Bumper Cover from OEM quality Polypropylene. Polypropylene is an extremely strong and durable thermoplastic polymer, making it perfect to withstand the hazards of daily driven vehicles. The Diffuser is also made from Polypropylene and features a slight black stipple textured finish for an aggressive appearance, superior durability and light weight.

      Complete Kit. MP Concepts Rear Fascia Kit comes complete and includes the rear fascia, lower diffuser, reverse light brackets and a pair of tail pipe inserts. The Kit does not include Reverse Lights or Side Markers – these will all carry over from your Mustang.

      Straight Forward Bolt-on Installation. MP Concepts engineered their Rear Fascia to be a direct fit upgrade replacement for your original stock bumper. Installation can be completed in about two hours, after painting of course. Please note that some of your original hardware will be reused for installation.

      Not Prepped for Backup Sensors. This MP Concepts GT350 Style Rear Bumper is specifically designed for Mustangs that do not have factory installed back-up sensors. Modifications will be needed if installed on a Mustang that is equipped with back-up sensors.

      Application. This MP Concepts GT350 Style Rear Bumper and Diffuser Kit is designed for use on all 2015-2017 Mustangs, including the V6, EcoBoost, GT and GT350 models.

      Application Note. This MP Concepts GT350 Style Rear Bumper and Diffuser Kit is designed to be used with aftermarket mufflers only, single tips will requiring trimming. This Bumper/Diffuser is not compatible with the original factory mufflers.

      Technical Notes. This MP Concepts Rear Fascia Kit ships unpainted. AmericanMuscle recommends professional installation of all body parts. We also recommend test fitting these products before they are painted.

      Freight Notes. Freight items can only be shipped within the continental 48 states, no expedited methods. What is freight shipping? Your Answers are Right Here!.

      MP Concepts

      Fitment: 2015 2016 2017 Details

      MP Concepts 397417

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Rear Bumper
      • (1) Diffuser Panel
      • (1) Pair of Reverse Light Backets
      • (1) Pair Tail Pipe Inserts

      Tech Specs


      Customer Reviews (21)

      Write a Review

      Ratings Summary

      3.5 out of 5 overall rating from 21 customers

      Installation Time: Full Day

      Installation Cost: $250-$500

      • April 18, 2020

        5 2015 GT - Tinera Installation Time: Full Day

        2015 Mustang Gt

        Came within two days, looks great! Absolutely worth every penny.

        Helpful (3)
      • March 25, 2020

        2 2016 V6 - Tracyk

        Gt350 Bumper

        Should be Gt350 bummer. The Body shop that's installing has issues with trying to fit the quad tips through the cut outs!

        Helpful (4)
      • January 22, 2020

        1 2015 GT - Jacob Installation Time: Full Day


        I ordered this bumper for my 2015 Mustang GT with Corsa Quad tips, this bumper DID NOT fit whatsoever, I had a professional shop try to install it and the quarter panel gaps were horrendous with big gaps and the cutouts for the exhaust didn’t even hang low enough for the quad tips to fit. THIS PRODUCT SHOULD BE REMOVED FROM THE WEBSITE.

        Helpful (9)
      • July 29, 2019

        1 2016 GT - Cali16

        Product DID NOT fit

        Purchased this for my 2016 GT. Fit well except for the passenger side. The two clips that the facia clip to near the taillight would not clip on. Tried to reinstall multiple times and still ran into the same problem with the fitment. I will try again with more help but I’m almost possible this part is a lost cause. Might have to just accept the $600 loss.

        Helpful (10)
      • April 23, 2019

        4 2016 EcoBoost - ItsBassi Installation Time: Less than 1 Hour

        Bought from OfferUp but..

        So honestly I paid $300 for this bumper from a part out so I can’t really complain about it. Quality isn’t the best (for me) because the diffuser didn’t clip on how it should have. If you squat down near the valance you can see a lil gap and for some reason the bumper didn’t have good fitment with my quarter panel. I love the look, just wish the fitment was a bit better..

        Helpful (4)
      • April 16, 2019

        1 2015 V6 - Abshire2 Installation Time: Less than 1 Hour

        Wishing it came with warranty

        Awesome product diffuser didn’t fit just right but only down fall is if it breaks they don’t help to warranty it out.

        Helpful (7)
      • April 02, 2019

        4 2017 V6 - PeteY Installation Time: Shop Install Installation Cost: $1000+

        Nice bumper

        Its a good bumper for the price.Stock mufflers don't fit with this bumper.Used magnaflow mufflers with the Corsa quad tips.Shop installed the back up sensors.

        Helpful (5)
      • February 06, 2019

        1 2015 GT - PeterT

        just the bumper

        The bumper was slightly warped and wouldn't straighten out with heat. Dimples and Craters all over the surface. The diffuser is great. It's just the bumper. It would be much more worth it, if they could supply a true OEM bumper

        Helpful (6)
      • January 23, 2019

        1 2016 GT - RussellG Installation Time: Afternoon

        Poor poor fitment

        Very dissatisfied with this bumper. The cheap tabs are really easy to break and the fitment was god awful. What a waste! If your ok with your rear bumper being half an inch shorter than your old one then this kits for you. Also if you have a corsa quad tip exhaust good luck fitting the exhaust through the holes without major cutting and adjusting. I test fitted it and took it off id rather cut my stock bumper than mess with this thing. I usually buy all my parts from AM but this thing is making me wonder if i should look elswhere. Please AM take this thing off of your site.

        Helpful (13)
      • January 09, 2019

        3 2015 EcoBoost - davidh Installation Time: Weekend

        Poor fitment.

        The bumper looks great but I am sorry to say but the fitment is very bad; I did not even get all the pieces for the bumper either. I am missing the license plate holsters to screw into. The bumper is about an inch off or so to one side if you have one side lined up properly. Also the diffuser does not even fit properly as well. Come on MP need to do a way better job!

        Helpful (11)

      Questions & Answers (65 answers)

      5 Top Rated Questions

      since the car is a dual exhaust and not a quad exhaust from the factory. And this kit comes with the quad exhaust look is 2 of the pipes hollow ? I'm confused at how that works ? so the quad is just for looks and only 2 of the 4 exhaust pipes are real ?

      • The MP Concepts GT350 Style Rear Bumper and Diffuser Kit will require the use of a quad tip axle back or cat back exhaust. Single tip exhausts will require modification of the insert panels. This is not compatible with the OEM exhaust.

      Helpful (11)

      Can I use this with a Roush quad tip active exhaust system? Thanks for your help.

      • We always recommend doing a test fit on our body panels, such as the MP Concepts GT350 Style Rear Bumper & Diffuser Kit, this will ensure that you see a proper fitment on everything. This does not have specific fitment for that exhaust, just that it will not work with the factory style exhaust and is recommended for use of a quad tip aftermarket exhaust, that specific exhaust is recommended to use the Roush Rear Valance.

      Helpful (4)

      Will the stock active quad tip exhaust fit through the openings.

      • Yes this bumper will work with the active quad tip exhaust on the new 2018 Mustang.

      Helpful (2)

      Will I be able to use this on my 2017 GT Premium with Corsa Extreme Quad Tips?

      • We cannot guarantee that any aftermarket exhaust will be a direct fit with the MP Concepts GT350 Style Rear Bumper & Diffuser Kit. There are many different options to go with. This Bumper will only work with aftermarket mufflers.

      Helpful (2) Show 1 more answer

      Will fit with the Roush Quad Tip Active Axle-Back Exhaust available here for sale?

      • Yes, this bumper kit is compatible with the Roush quad tip axleback exhaust. 

      Helpful (1)
      10 More Questions
      Will this work with aftermarket diffusers? Is the diffuser the same size as the stock premium? I like this but would like to get a more aggressive diffuser. 1 answer
      i have a 2017 mustang gt base model but I want to change the look on the rear. on this bumper Can I change this diffuser for a Anderson composites diffuser . Or wat bumper do I need to add a Anderson composites diffuser? 0 answer
      What type of hardware is it missing if buying opened box? 1 answer
      Will Polypropene withstand daily driving ? 1 answer
      Can I use any other valances/diffuser with this bumper besides the one provided? 0 answer
      Do the vents in the rear diffuser actually work or show tell? 1 answer
      Why won’t this product fit a 2018-2019 model? 1 answer
      So in the video you guys say its to replace the bumper on base models. So will this not work with my 2015 GT Premium? I don't have reverse sensors, just the diffuser where the part under the reverse light is the same color as the car but the part that goes from the exhaust tips over the reverse light is black. 1 answer
      Will this work with a Xforce Varex exhaust system for the ecoboost? What quad tips would fit the Varex mufflers? 1 answer
      Since I got my stang I notice a broken clip under the driver side taillight so in conjunction with that and they fact I like the look of this bumper better I am looking to purchase. I have read the comments and seen alot of negative writings about fitment issue. Do you know anything about this? 1 answer

      Will It Fit My Mustang

      • EcoBoost - 15, 16, 17
      • GT - 15, 16, 17
      • GT350 - 15, 16, 17
      • GT350R - 15, 16, 17
      • V6 - 15, 16, 17

      Designed to be used with aftermarket mufflers only, single tips will requiring trimming. This Bumper/Diffuser is not compatible with the original factory mufflers.

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