BMW M Performance Carbon Fibre Rear Diffuser for G90 & G99 M5

4,219.99

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In Stock - Available from Supplier Dispatch between 29 November - 6 December.

You know what? The G90 and G99 M5 already look serious, but this Genuine BMW M Performance Carbon Fibre Rear Diffuser adds that final touch that makes people stop and stare. The two-piece design slots into the rear bumper like it was always meant to be there, giving the car a more defined shape from behind.

The gloss carbon weave catches the light in a way that feels special without trying too hard. It’s one of those upgrades that makes the car feel more complete, the kind of thing you notice every time you walk up to it. BMW built it to fit perfectly, so the whole install feels clean and properly finished.

FEATURES

  • OEM Quality made by BMW to guarantee fit and performance.
  • Carbon Fibre Construction manufactured from pre-preg carbon fibre with a 2×2 weave.
  • Easy Installation designed for a direct fit with no modifications required.

SPECIFICATIONS

  • 2024- BMW G90 M5 Saloon
  • 2025- BMW G99 M5 Touring

ADDITIONAL INFORMATION:

Manufacturer

BMW M Performance

OE References

51755B6E579
51755B6E580

PREPREG is a common term for a reinforcing fabric such carbon which has been pre-impregnated with a resin system. This resin system (typically epoxy) already includes the proper curing agent. As a result, the prepreg is ready to be laid into the mold without the addition of any more resin. In order for the laminate to cure, an autoclave production process is used, a combination of high pressure and heat.

  • Maximum strength and performance characterictics. In a hand layup production process, it is difficult to achieve 50% fabric and 50% resin content.  Typical hand laminates, even when vacuum bagged, end up with a significant amount of excess resin. Excess resin increases brittleness and reduces overall strength properties. On the other hand, most prepregs contain around 35% resin. This is ideal for maximum cured properties and generally impossible to achieve in normal hand lamination.
  • Uniformity and repeatability. The prepreg is of uniform thickness and each part coming out of the mold may theoretically be the same. Vacuum bagging technology may have some errors in processing, but prepreg ensures production consistency.
  • Reduce curing time. After the thermal curing cycle, no need to wait for the standard 48 hours can be fully cured.
  • Aesthetics. Although prepreg processing still requires mold preparation and demoulding, prepreg processing eliminates air bubbles, makes it easier to obtain a smooth, glossy surface as well as eliminates any seaming lines.

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Most orders dispatch within one business day (Monday to Friday). EU delivery takes 3–5 working days from dispatch, and tracking details will be provided via email once your order has shipped.

Please note that import taxes may apply outside the EU, and these are the responsibility of the buyer. Some items may ship directly from our suppliers and may have varying delivery times. If an item is out of stock, we will contact you to discuss the available options.

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RETURNS

Changed your mind? You can return unused, uninstalled items in original packaging within 30 days of delivery. Return shipping is the customer’s responsibility unless the item is faulty.

Custom, used, or built-to-order items are non-returnable.

Once we receive and inspect your return, refunds are typically processed within 10 business days.

If your item is damaged or incorrect, contact us within 48 hours with photos and order details.

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WARRANTY

All VA and VA Motorsports products come with a 1-year limited warranty covering manufacturing defects and fitment issues. For third-party items, warranty terms vary by brand—please check the product listing or contact us for details.

This warranty does not cover wear and tear, incorrect installation, cosmetic damage, labor, or third-party costs.

To start a claim, email us with your order number, issue description, and photos. If the claim is approved, we’ll offer a replacement, store credit, or a refund.

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BMW M Performance Carbon Fibre Rear Diffuser for G90 & G99 M5
BMW M Performance Carbon Fibre Rear Diffuser for G90 & G99 M5