G82/G83 M4
103 products
We carry carbon fiber parts for the BMW G82 M4 coupe and G83 M4 convertible, from front splitters and grilles back to trunk spoilers and diffusers. Most are pre-preg dry carbon with a gloss clear coat. The M4 shares its front end with the M3, so you get the full choice of splitters and grilles, including our own SPL1 OEM++ and the one-piece SPL2.
For the back of the coupe there are ducktail, CS-style, OEM-style and M4-style trunk spoilers, two dry carbon trunk lids (one of them CSL-style) and rear corners made for the M4. The convertible has a spoiler of its own. We also list interior trim and engine bay pieces. Parts come with a 1-year warranty, and our fitment guarantee covers the car named on each product page.
BMW G82/G83 M4 buying guide
Coupe and convertible fitment
The G82 coupe and G83 convertible share their nose and lower body, so most splitters, grilles, air ducts, side skirt extensions and rear corners are listed for both. The trunk is where they differ: most spoilers and both trunk lids on this page are coupe parts, and the convertible has its own M-style spoiler shaped for its trunk lid. The fitment line on each product page names the body style.
Choosing a rear spoiler
Start with how far you want to move from the stock look. OEM-style, M4-style and CS-style lips stay close to BMW's own shapes. A ducktail lifts the trunk edge for a sharper profile, and the MP-style and AD-style wings are there if you want a proper wing. Our M4 rear spoiler buying guide compares the styles, and every option is under G82/G83 M4 spoilers.
Trunk lids
We list two dry carbon trunk lids for the G82 coupe, and one of them is CSL-style. Both replace the factory lid outright, so plan on professional fitting. A panel this size can take longer to arrive than a spoiler, so check the lead time and shipping on the product page before you order. Both are under M4 trunks.
Rear corners and diffusers
The M4's rear bumper corners are different from the M3's, so we list M4 versions with and without winglets, plus our own G82 rear corner extensions. The replacement corners go on in place of the factory gloss-black pieces, which unclip from the bumper. You can pair them with the MP-style or Performance-style diffuser. Our 3-piece diffuser comes with its own rear corner extensions. You'll find all of them under M4 diffusers and rear corners.
Interior trim and build dates
Dash and console trim comes in versions by build date. M4s built from March 2023 have BMW's curved display, and the 2025 facelift (LCI) moved to iDrive 8.5. Pick the version that matches your car, and if you're not sure which one that is, text a photo of your dashboard to 609-525-4865.
Test fitting and returns
Test-fit every part before you paint, drill or install it, because installed parts can't be returned. If something doesn't fit the car listed on its product page, contact us before you send it back, and our fitment guarantee covers the return shipping.
Frequently asked questions
Do M3 front splitters fit the G82 M4 and G83 convertible?
Yes, in most cases. The front splitters and grilles on this page, including our SPL1 OEM++ and SPL2 splitters, are listed for the G80 M3, G82 M4 and G83 M4 convertible. The fitment line on each product page will confirm it for yours.
Which spoiler fits the G83 M4 convertible?
The G83 M-style dry carbon spoiler is made for the convertible's trunk lid. Most other spoilers here are listed for the G82 coupe, so check the body style on the product page before you order one for a convertible.
Are the M4 rear corners the same as the M3's?
No. The M4 has its own rear bumper corners, so pick a listing that names the G82/G83. We have M4 corners with and without winglets, plus our own G82 rear corner extensions.
Is there a CSL-style trunk for the G82 M4?
Yes. We list a CSL-style dry carbon trunk and a second dry carbon trunk lid, both for the G82 coupe. Each one replaces the factory lid, so we suggest professional fitting. The product page shows the expected lead time.
Which M4 parts are Unit 17 exclusives?
Our M4 exclusives are the SPL1 OEM++ and SPL2 front splitters, the V2 side skirt extensions, the side skirt extensions with a small winglet, the 3-piece rear diffuser, the G82 rear corner extensions and a rear diffuser with an F1-style brake light. They're all under M4 exclusives.
How long does shipping take?
Most orders ship within 5 business days by UPS or FedEx, unless the product page shows a longer lead time, and most US deliveries take 1–5 business days after that. Parts marked Coming soon don't have a ship date yet. Our shipping policy has the details.