Our new Mustang GT500 style splitter winglet & fender extensions are now available. This product is custom designed to fit all late model Mustangs from 2015 to 2023.
or as low as $16.04/mo with Affirm
Available
Real installs, real reviews — from FFP customers running this part.
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You'll get an instant confirmation email with your part details and invoice. We source from a network of authorized suppliers across the country, so lead times vary by brand and part type — we'll send a tracking number the moment your parts move.
Made-to-order builds — carbon fiber bodywork, fabricated systems, custom finish work — run longer than off-the-shelf items because they're built per order. You'll get progress updates throughout the build.
Need a specific timeline on a part before you buy? Call 805-267-9762 or hit the chat — we'll check vendor stock direct and give you a straight answer.
Absolutely! Once your order ships, you'll get an email with a tracking link so you can follow its journey from our shop to your doorstep.
If your order ships via freight, you'll get a separate email with a direct link to the carrier's tracking page — easy and stress-free.
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Anonymous (verified owner) –
Michael E. (verified owner) –
While the quality of the winglet product LOOKS excellent, the box did not include any instructions for installation on my 2017 Mustang GT Performance Package with the stock splitter. The texture of the black plastic winglets is slightly different from my car’s stock black plastic splitter, which could irritate some potential buyers, but is ok for me. The video link for installation on the site is for a different model car and does not apply. One plastic rivet was preinstalled with a plastic spacer and blue tape [to secure the washer] which is a nice detail, but any test fitting of the winglet requires that either that rivet not be installed, or to push it into the wheel well, which will make locating the required ‘drilled in’ riv-nut underneath difficult to do. I am concerned that removing this revit from the winglet will damage it. I have reached out to FFP to get some insight on how the marking and the location for the drilling should be done as I am eager to get these installed on my car. One last thing, and a reason to test fit: There is the aforementioned plastic spacer at the top hole in the winglet and none in the hardware bag for the lower hole. It isn’t clear to me if that is intentional, but the spacer COULD possibly cause clearance issues for cars with oversize [diameter] tires. I am willing to travel to the Poway, CA facility for the installation if it is reasonable, and they could use my car for a video of that installation. I am a member of the Rt66 Mustang Club [see our Facebook page or website], and there are others in our club that could be interested in these and other FFP products.
Anonymous (verified owner) –
Easy installation, good product and fit well on my car
ashley oliveras (verified owner) –
great product really makes your car stand out
Ryan (verified owner) –
Absolutely love these totally makes the front end look more aggressive!
Charles Siritho (store manager) –
We are very happy to hear that, Ryan. Thank you for the nice feedback and comment. Please continue to support us by following us on our youtube and Instagram. https://www.youtube.com/thefunctionfactoryaz and https://www.instagram.com/ffperformanceaz/
Edgar C. (verified owner) –
Excellent product, really well done. My Mustang GT stands out very nice
Charles Siritho (store manager) –
Thank you for the feedback Edgar, we are very happy to hear that. We hope you love the product. Please continue to support us by following us on our youtube and Instagram. https://www.youtube.com/thefunctionfactoryaz and https://www.instagram.com/ffperformanceaz/
Esdras Canales (verified owner) –
These look phenomenal! I love the way they give the car a more aggressive stance. They were really easy to install. Only downside is the pushclip for the inner fender. Once you put it on, theres no removing it. I broke my bumper trying to remove it to switch out my turn signals now I’m stuck with a dangling bumper.
andrew theoharis (verified owner) –
The surface finish is way different than the Ford texture finish. You should also add another push pin on the bottom, it does not sit flush to the splitter it hangs down with a gap about .250 inch when fully tightened. On a GT350R there is not much ground clearance.
Charles Siritho (store manager) –
Hey Andrew,
Thanks for the honest reply. Consider the OEM wickers are 550+, we think this is a great alternative. Do you have pictures of the said gap?
Skip (verified owner) –
Parts were as advertised and fit properly.
Ryan (verified owner) –
Easy to install looks great
Anonymous (verified owner) –
Very happy with this item and the way it looks on my car. It was actually cheaper buying from FFP than buying from the manufacturer because on the FREE shipping. Also just wanted to say that this fits well with the Drake aftermarket front chin spoiler.