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The MHC+ DF1 carbon fibre rear diffuser for the BMW G80 M3 and G82 M4 is an OEM+ rear styling upgrade with a racing LED brake light.
By replacing the factory gloss black diffuser with an MHC+ carbon item, you are enhancing the rear of your vehicle with outstanding quality, increased road presence and a far more up-market aesthetic.
Why choose pre-preg carbon fibre?
Unlike normal carbon fibre, pre-preg carbon is reinforced for increased strength and durability. It can also be an astonishing 70% lighter than other carbon options, ideal for weight-saving. Quality-wise, pre-preg carbon is far more consistent meaning the chance of imperfections is dramatically reduced. The manufacturing process eliminates undesirable air bubbles and results in a perfect, sleek, smooth & high gloss finish, making the ultimate part to complement your vehicle.
When you buy pre-preg, you are investing in a higher quality, longer-lasting part that will outlast other forms of carbon fibre and potentially save you money in the long term.
Why upgrade your OEM carbon fibre diffuser to the DF1?
The DF1 rear diffuser features a new and improved style to give your G8X vehicle a more unique look. Enjoy a more aggressive design without compromising on OEM-like quality and finish. The best thing about upgrading is that you can sell your OEM diffuser to recoup some of the cost, making your new DF1 diffuser much more affordable. OEM G8X carbon diffusers can be sold for around £500 based on condition!
PRODUCT SPECIFICATION
- 100% pure pre-preg carbon fibre construction
- OEM-style carbon weave
- High gloss finish
- Integrated LED brake light
- Fitment guarantee
- Supplied with pre-applied 3M adhesive double-sided tape
- 3 Year warranty
COMPATIBILITY
- BMW G80 M3 Saloon (2021+)
- BMW G80 M3 Competition Saloon (2021+)
- BMW G81 M3 Touring (2023+)
- BMW G81 M3 Competition Touring (2023+)
- BMW G82 M4 Coupe (2021+)
- BMW G82 M4 Competition Coupe (2021+)
- BMW G83 M4 Convertible (2021+)
- BMW G83 M4 Competition Convertible (2021+)
WHAT'S IN THE BOX?
- 1x MHC+ DF1 rear diffuser in pre-preg carbon fibre
- All necessary hardware
Stock & Shipping Information
- We typically stock this unit in the United States for faster fulfillment.
- During periods of high demand, this product may ship directly from the official R44 UK warehouse.
- Email us to confirm current stock and estimated shipping time before ordering if needed.
- Shipping cost for this item is $200, which includes the import tariff required to bring this product into the United States from the UK. This ensures no surprise duties upon delivery.
Why Buy Authentic MHC From CenCal Motorsport?
- Guaranteed genuine MHC UK product
- Unmatched pre-preg carbon quality
- Proper fitment and engineering
- U.S. stocking when available
- Direct support from the CenCal team
If you’re building your G80/G81/G82/G83 M3/M4 correctly, authentic MHC carbon is the standard.
Available now at CenCal Motorsport.
Every CenCal order is eligible for Package Protection, powered by Redo. It is selected by default at checkout and covers your shipment against loss, theft, and damage in transit.
What it covers:
- Lost packages confirmed by the carrier
- Stolen packages marked as delivered but not received
- Items that arrive broken or damaged in transit
Resolution: Approved claims receive a full replacement at no cost. For damage claims, you keep the damaged item and receive a brand new replacement.
Claims must be filed within 7 days of the delivery date. See the full policy or email support@cencalmotorsport.com if you need help.
If protection is removed at checkout, CenCal cannot file a claim or accept responsibility for shipping issues.

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