
BMW M3 (G80 / G81) M4 (G82 & G83) Carbon Fibre Rear Diffuser Surround
The Carbonwurks M3 (G80 / G81) M4 (G82 & G83) Carbon Rear Diffuser Surround is an OEM Style Design Manufactured in Genuine Autoclave Pre-Preg Carbon Fibre.
From factory, BMW offer a carbon fibre version of their rear diffuser but they do not offer an option for the gloss black surround. We have based our own carbon fibre version on the OEM original but at a more cost effective price without compromising quality or fitment. Our design provides an aggressive look for the rear of your vehicle and enhances the styling dramatically. This is made with the same 2x2 twill carbon weave BMW use for their parts.
PLEASE NOTE THIS PART IS THE SURROUND AND DOES NOT INCLUDE THE DIFFUSER. THE PART IS HIGHLIGHTED IN THE LAST PHOTO.
Specifications
- Autoclave, Pre-Preg carbon fibre
- 3K 2x2 Twill – OEM weave
- High gloss UV resistant lacquer/clearcoat
- Coated with RaceGlaze 55 high carnauba wax
For those who don’t know much about Pre-Preg Autoclave carbon, this is the strongest and lightest carbon fibre available. The rear diffuser is cooked under immense pressure to give a very uniform and pin-hole free finish. With this being cured at high temps, it ensures longevity of the diffuser itself. The diffuser is then finished in a UV, high gloss lacquer before being hand and machined polished and being treated to a high content carnauba wax from our partners Race Glaze.
Installation
Fitment is a direct replacement for the original surround which once removed just clips into place. We always recommend using a competent bodyshop to undertake the installation. We standby our quality and fitment of all our parts. With all our products we produce and sell, every component is designed to stand the test of time along with giving as close to OEM fitment that can be achieved.
Compatibility:
- BMW M3 G80 – 2021 to Present
- BMW M3 G81 Touring - 2023 to Present
- BMW M4 G82 – 2021 to Present
- BMW M4 G83 Convertible – 2021 to Present
If you are unsure of fitment, please get in touch with us before purchasing. If you would like an up to date stock level check, please do get in touch.
We are dedicated to ensuring the highest possible quality service to our customers.
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About Us
Here at Carbonwurks we design, develop and produce full Prepreg Carbon Fibre parts as well as offering CFRP (Carbon Fibre reinforced polymer) parts too for mainly the automotive world. However this is not the only thing we offer.
Some parts that are not under stress or load don't necessarily need to be made out of full Prepreg Carbon Fibre, and for this reason we also offer a lamination/skinning service to turn original parts into Carbon Fibre.
Alongside the Carbon Fibre parts we also design other automotive components and retail only the best automotive performance products that we see fit.
Payment

We accept Paypal transactions directly through eBay or our website which can handle card payments too even if not a Paypal account holder.
Bank transfers are also accepted, please contact us for invoicing and details.
Payment must be made in full before the item(s) are released.
Q) How long does it take to receive my order?
If the parts are in stock then dispatch usually can be the same or next day. Some parts however can be ordered on backorder but may take anywhere from 1-5 weeks to dispatch due to manufacturing times. Please be aware that estimated delivery times may vary depending on how busy the workshop is and that during particularly busy periods, these deadlines might be extended. Please ensure that you supply an e-mail address on ordering and we will e-mail you to notify you when your items have been dispatched. Once items have been dispatched, delivery within mainland UK is next day. International orders can take 2-6 days for delivery. We send all of our products using insured and tracked methods so there are no concerns for you if any products are lost or damaged in transit.
Q) What happens if my order is lost or damaged by the courier in transit?
We always send items using insured and tracked methods, so there's no risk to you at all. Just let us know about the problem immediately and we'll arrange for a new part to be sent in exchange as soon as possible. Please ensure that you check the goods before accepting them from the courier or alternatively sign for the parcel as unchecked. If the goods arrive clearly damaged please either refuse delivery or sign as damaged with clear photos to be taken before unwrapping the packaging.
Returns
We hope you will be happy with your purchase from Carbonwurks, however should you wish to return anything bought from us, we will be happy to refund or exchange a product provided it is returned to us in a completely unused condition with all packaging, etc.
Returns should be made within 14 days and supplied back to us in the original, undamaged packaging.
If we find that the product has not been returned to us in the supplied condition, we reserve the right to refuse a refund on the item(s).
We are unable to offer a refund or exchange on any specially ordered or customised products and any returns that are made not due to a product fault (damage on arrival etc) will incur a 25% restocking fee.
Please note we do not refund delivery charges under any circumstances.






