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GT500/CS Rear Bumper Cover w/ Diffuser - Unpainted (05-09 All)

Item 53674
AmericanMuscle no longer carries the GT500/CS Rear Bumper Cover w/ Diffuser - Unpainted (05-09 All). Please check out Mustang Bumpers - Front & Rear for an updated selection.
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    Product Information

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


    • California Special / Shelby GT500 Styling
    • Integrated Diffuser
    • Durable Polyurethane Construction
    • OE Fit and Finish
    • Fits 2005 to 2009 GT and GT500 Mustangs
    • Fits 2005 to 2009 V6 Mustangs with Dual Exhaust


    California Special / Shelby GT500 Styling. Now you can add the same aggressive race inspired styling of the California Special and Shelby GT500 to your very own Pony with a Ford rear fascia (a.k.a. Bumper Cover) that features the same integrated rear lower diffuser.

    Perfect For Restorations. Restore your California Special or GT500 back to better than new condition by replacing that old cracked, curb rashed, or accident damaged rear bumper cover with a direct fit replacement for a perfect restoration.

    OE Quality Construction. Made to the original factory specifications from high-pressure injected molded OEM quality polyurethane material this Ford Mustang Rear Bumper Cover is the perfect replacement part for an accident or quality restoration.

    Application. This Ford GT500/California Special Rear Mustang Bumper Cover is designed to be a direct fit replacement for all 2005 to 2009 Coupe and Convertible Mustangs, including the GT, Bullitt and Shelby GT500 models. It is also perfect for 2005-2009 V6 Mustangs that have been converted to a dual exhaust.

    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!.

    Fitment: Details

    CA Residents: WARNING: Cancer and Reproductive Harm -


    Customer Reviews (27)

    Write a Review

    Ratings Summary

    4.6 out of 5 overall rating from 27 customers

    Installation Time: Weekend

    Installation Cost: $100-$250

    • March 31, 2018

      5 2007 V6 - TaraB

      GT500/CS Rear Bumper Cover w/ Diffuser

      Fit was great, it installed like factory part. I was able to get it color matched. It really looks good.

      Helpful (6)
    • March 27, 2018

      1 2007 V6 - Joseph

      Not happy

      Not happy with the run around I get with American Muscle.. Received the first Gt500/CS bumper cover damaged they had me destroy it.. Received the 2nd one damaged refused delivery.. Been 3 weeks now and I get the run around and not a honest answer on what's going on.. Last week 3/20/2018 I was told this matter was taken care of and my new bumper cover will be sent out this week... I called 3/23/18 stating I still haven't received a e-mail confirming it 3/27/18.. I was told you will get a e-mail today 3/23/18 or 3/26/18 on shipment.. I still haven't received it...

      Helpful (12)
    • February 08, 2018

      5 2007 V6 - PieroT Installation Time: Less than 1 Hour

      Great product

      Got my bumper earlier than expected. Fit my v6 perfectly. No complaints.

      Helpful (9)
    • November 07, 2017

      4 2006 V6 - Damien Installation Time: Less than 1 Hour

      Much better

      This is a subtle change to my mustang but I love it. It looks much better than the original bumper. Installation was pretty easy and the quality is going too. I wish it was a little bit better but overall this is a good product.

      Helpful (7)
    • June 14, 2017

      4 2006 V6 - Joe Installation Time: Shop Install Installation Cost: $250-$500

      Nice Looking Bumper

      Great looking bumper, but went through some trouble getting it. Came in over two months after ordering it, box was delivered crushed. Sent it back and waited another three months to get it. I went myself to the UPS freight center to pick it up. No damage. Drove it straight to Ford. They looked at it and showed me all the flaws that needed to be fixed before painting. It did need a lot of work. It really needs to be professionally done. Next day I drove my car back and they installed it. The tab on the bottom for support was not connected because it lined up with nothing. When I get the chance, I'll drill a hole in the frame to connect the tab to it. The bottom of the bumper is textured so it made it hard to paint the flat black I wanted so I went with gloss. Looks ok. Cost an extra $450 to paint and install. Once the bumper was installed I was able to have my Pypes Dual Exhaust installed and then hook up my Bama Tuner. I've had those parts in my garage since October 2016 waiting for the bumper. The Mustang looks good and sounds good now.

      Helpful (10)
    • October 22, 2016

      5 2005 V6 - lilbrownie Installation Time: Afternoon

      awsome product

      recieved bumper in very protective packaging, fit perfectly

      Helpful (8)
    • July 29, 2016

      5 2007 GT500 - 2007Shelby500

      Another happy GT500 owner

      I got a great deal on a rear bumper cover. I was worried about fit and finish until the body man told me it was actually a Ford part. What a deal!

      Helpful (8)
    • June 16, 2016

      5 2009 V6 - TotalToast Installation Time: Shop Install Installation Cost: $100-$250


      Bumper came. Took for freaking ever. Product is like i expected though. They should have a painted option for everything.

      Helpful (11)
    • May 28, 2016

      4 2006 V6 - Grey Installation Time: Shop Install Installation Cost: $100-$250

      Awesome Aggressive Style

      I converted my Pony Package V6 to a dual exhaust but didn't want to go with just the stock dual exhaust bumper. This one gave me the aggressive look I wanted to match the aggressive new sound of my car. The combination is a real head turner. The only issue I had with the bumper is that it's not a completely perfect fit on the sides. It sticks out very slightly as if it needs to be popped into place. I had it professionally painted and installed so I may have it adjusted a little to get a tighter fit. I'm kind of a perfectionist though and you can't really tell unless you take a close look.

      Helpful (8)
    • March 07, 2016

      5 2006 GT - P3s197 Installation Time: Afternoon

      Looks great!

      This is bumper has a great look to it with the diffuser. I had a body shop paint it gt/cs style where there lower half is painted where as the gt500 is unpainted. The body shop had a little trouble trying to match my paint p3(Windveil blue) but in the end got it pretty close. The fit of the bumper is very close to perfect, good enough for me.

      Helpful (8)

    Questions & Answers (6 answers)

    5 Top Rated Questions

    Does the diffuser itself come in matte? Or is the whole thing just primed white?

    • The GT500/CS Rear Bumper Cover w/ Diffuser will come as completely unprepped and unpainted polyurethane. This will require the diffuser to be painted matte black in order to achieve this finish.

    Helpful (1)

    Does the bottom part come off for easier painting?

    • The GT500/CS Rear Bumper Cover w/ Diffuser comes molded together in one piece. You cannot remove the diffuser to paint that area separately.

    Helpful (0)

    Only comes unpainted?

    • Unfortunately the GT500/CS Rear Bumper Cover w/ Diffuser will only come unfinished.

    Helpful (0)

    Cutting the exhaust holes to fit quad tip (dual on both sides) exhaust? I have an 07 GT and it currently has a Saleen H-Series rear bumper and deck lid panel, and dual tip exhaust on both side. Personally I'm not a fan of the Saleen bumper and would like this one but I would like to keep the exhaust the way it is. Thanks in advance

    • The GT500/CS Rear Bumper Cover w/ Diffuser - Unpainted (05-09 All) can be modified at your own discretion to fit quad tips if needed.

    Helpful (0)

    v6 I have a v6 mustang with the stock exhaust, but I will not be able to install dual exhaust yet, will this bumper fit my v6 on stock exhaust or shoul I wait till I get dual?

    • This bumper will fit on your car with the stock exhaust, however, it just won't look very good. There will be an empty exhaust cutout on the driver side and the tip that will be coming out of the other cutout is much smaller than the cutout itself. But if you want to do it, you can. I would recommend getting the dual exhaust before purchasing this rear bumper. It would actually be best to have both the exhaust and bumper installed at the same time, that way you or whoever is installing them can make sure the tips fit perfectly with the bumper. If you can't install them at the same time, then I would get the exhaust done first. Again, that is just my opinion. If you want to install the bumper first then you shouldn't have any fitment problems.

    Helpful (0)
    Post Your Question
    1 More Question
    Does it fit any exhaust? will this fit my Bassani Axle-Back Exhaust? 1 answer

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (1) Rear Bumper

    Tech Specs

    Will It Fit My Mustang

    • Bullitt - 08, 09
    • GT - 05, 06, 07, 08, 09
    • GT500 - 07, 08, 09
    • V6 - 05, 06, 07, 08, 09

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