BMW F80 M3 & F82 M4 Side Skirt Extensions
3 products
F80 M3 side skirts on this page are carbon fiber extensions that fit under your factory skirts. The sedan has two sets to pick from, an M Performance-style pair and a forged carbon pair, while the F82 coupe and F83 convertible have an M4 set of their own.
All three are real carbon fiber, with predrilled holes and self-tapping screws in the box. Order by body style: our M3 and M4 listings don't cross over. Shopping for the newer G80 M3 instead? See the G80 M3 side skirts.
BMW F80 M3 & F82 M4 Side Skirt Extensions buying guide
Sedan or coupe: order the set for your body
We list our F8X side skirts by body. The F82/F83 M4 extensions are made for the coupe and the convertible. The M Performance-style set names the F80 M3 and says outright that it isn't for the M4, and the forged set is listed for the M3 alone. Go by the car named in the product title rather than the photos.
Choosing F80 M3 side skirts: M Performance style or forged
Both M3 sets are extensions, so the factory skirts stay on and the carbon blade runs along their lower edge. The listings don't compare their shapes, so the clearest difference is the finish.
- M Performance style: modeled on BMW's own accessory extensions, in real carbon fiber. This part is also listed for 3 and 4 Series cars with M Sport, which is why you'll find it on the F30 side skirts page too.
- Forged carbon: made from short fibers pressed together at random, so the surface shows a marbled pattern instead of a weave, and no two sets look quite alike. It makes sense on an M3 that already wears forged pieces elsewhere.
Fitting and model years
Every set arrives with predrilled holes and self-tapping screws that go into the factory skirt, and the forged listing marks drilling as required, so book a professional installer. The M3 sets are listed for 2014 to 2018 cars, in line with the end of F80 production in 2018. The M4 set is listed for 2014 to 2019, while the coupe and convertible stayed in production into 2020; if yours is a late car, text 609-525-4865 before ordering. Test-fit each side before drilling or painting. If a set doesn't fit the car named on its product page, contact us before installing and our fitment guarantee covers the return shipping. Browse all F80 M3 and F82 M4 parts to match the front and rear.
Frequently asked questions
Which side skirt extensions fit an F83 M4 convertible?
The F82/F83 M4 extensions. Their listing covers both the coupe and the convertible. The two M3 sets are for the F80 sedan only, and the M Performance-style listing says outright that it doesn't fit the M4, so convertible owners should skip both.
Forged or M Performance style: which suits my F80?
Pick by finish. The M Performance-style extensions are real carbon fiber shaped after BMW's accessory part, a good match if you want a factory-accessory look. The forged extensions show the marbled pattern of forged carbon, which works best alongside other forged parts. Both are listed for 2014 to 2018 M3s and mount the same way, with predrilled holes and self-tapping screws.
Will I have to drill my F80's rocker panels?
Plan on it. The extensions come with predrilled holes and self-tapping screws that fasten into the factory skirt, and the forged listing marks drilling as required. We recommend a professional installer. Hold each piece in place and check the fit before any holes are made, because installed parts can't be returned.
I own a 2020 M4. Can I order the M4 extensions?
Text us first. The listing gives 2014 to 2019, while the F82 and F83 were built into 2020. Send your build date or a photo of the side skirt to 609-525-4865 and we'll confirm the fit before you order.