2025-2027 BMW G90/G99 M5 M Performance style dry carbon fiber rear diffuser
2025-2027 BMW G90/G99 M5 M Performance style dry carbon fiber rear diffuser
Feral Auto

2025-2027 BMW M5 M Performance Style Carbon Fiber Rear Diffuser (G90, G99)

SKU: FRL-G9XMPRD

$1,499.99
/
  • Fitment guaranteed
  • Free shipping within the lower 48 states

Current lead time is approximately 9-12 weeks from order to ship.
Orders may ship sooner depending on available stock

2025-2027 BMW M5 M Performance Style Carbon Fiber Rear Diffuser (G90, G99)

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This product can expose you to chemicals including lead, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

The M5's rear diffuser is the busiest shape on the back of the car, and from the factory it's painted plastic sitting under four exhaust tips that aren't.

This is an M Performance style diffuser built from autoclaved 2x2 pre-preg dry carbon fiber — it follows the M Performance design rather than the standard factory part, and fits as a direct OE replacement: same exhaust cutouts, same mounting points, same hardware. The shape you'd pay BMW's options-list price for, in real dry carbon.

Pairs with the Carbon Fiber Side Skirts to carry carbon along the lower line of the car. Included in the Carbon Fiber Aero Bundle. Browse the full BMW G90/G99 M5 collection.

Fits the 2025-2027 BMW M5 Sedan (G90) and M5 Touring (G99).

Why Autoclave Pre-Preg Dry Carbon Fiber

Pre-preg carbon arrives with the resin already impregnated into the weave at a controlled ratio, so no resin is added by hand during layup — that is what makes it dry carbon. Curing it under heat and pressure in an autoclave consolidates the laminate and drives out trapped air that would otherwise show as flaws in the finished surface. Other processes introduce the resin at the mold, so the ratio is set during layup rather than before it.

A diffuser is all fins, channels and inside corners. Those are exactly the geometries where hand-laid resin pools and cures thick, and where an autoclaved laminate keeps the weave consistent from the face of a fin down into the valley beside it.

Please note: Matte and Forged Carbon finishes are non-refundable once the order has been placed.

This is a direct replacement, not a modification. The diffuser fits the factory rear bumper mounting points using your existing hardware — nothing to drill, nothing to cut, nothing permanent. No additional hardware is included, and none is required.

Please note that all products must be installed by a professional. Minor adjustments may be required during installation and are not indicative of defects. Additionally, please be aware that most carbon fiber products are handmade, resulting in slight variations between items.

Free standard shipping on all orders delivered within the 48 contiguous United States.

In-stock parts are prepared for shipment within 1–3 business days. If a part is not currently in stock, the lead time shown under the Add to Cart button applies. Once a shipment leaves our facility, most orders arrive within 3–7 business days, and freight shipments within 5–10 business days.

We also ship to Alaska, Hawaii, U.S. territories, APO/FPO/DPO addresses and internationally by quote — contact us before ordering. Full details in our Shipping policy.

Returns require our approval. Contact us within 5 days of receiving your item to request one. Approved returns are subject to a 30% restocking fee plus return shipping, and original shipping is non-refundable.

Items that have been installed, used or modified cannot be returned. Non-standard carbon finishes are non-returnable once the order has been placed.

If we shipped the wrong part or it has a manufacturing defect, there is no fee and we cover return shipping. Damage in transit must be reported within 24 hours of delivery — see our Shipping policy. Carbon components carry a 6-month structural and finish warranty. Full details in our Refund policy.