Our GTX styling offers the most aggressive appearance for your F8x M3 or M4. Our GTX carbon fiber rear diffuser features 4 piece design which includes the diffuser, 2 side extensions and a huge undertray. So if you plan is to wow your fellow BMW drivers, then this diffuser is a must! The F8X M3/M4 GTX carbon fiber diffuser will seamlessly match other RW or OEM parts you have on the vehicle as we craft them from 2×2 carbon fiber. We know our customers care deeply about the parts they choose to install on their vehicle, which is why we only use the highest quality Carbon Fiber fabric, clearcoats and resin in the making of our products. Just like the rest of our product line, this GTX carbon fiber diffuser comes with the RW fitment and quality guarantee. Installation is purely bolt-on and does not require and special modifications or cutting.
Installation
This GTX diffuser for the F8x M3 and M4 uses a combination of OEM screws/mounting locations, supplied hardware and self tapping screws. Due to the large nature of this diffuser we highly recommend professional installation. If you are local to RW Carbon, we urge you to let us install it for you. However, if you are not, then we can suggest a shop near you that is qualified.
Fitment
- 2015-2020 F80 M3
- 2015-2020 F82, F82 M4
- 2016-2020 F82 M4 GTS & CS
Features
- One of the most aggressive diffusers for the F8x M3/M4
- Genuine 2×2 carbon fiber construction
- 4pc kit includes; diffuser, 2 side extensions, undertray
- Finished with UV resistant clear coat
- Usually in stock at our California warehouse
- Bolt on installation
FREQUENTLY ASKED QUESTIONS
If it's in stock and ready to roll, your order usually hits the road within 1–3 business days.
For made-to-order or specialty items (like carbon fiber parts or custom builds), the turnaround can take up to 8 weeks — perfection takes time.
Either way, we'll keep you updated so you know exactly when your parts are leaving the pit lane.
Absolutely! Once your order ships, you'll receive an email with a tracking link so you can follow its journey from our shop to your doorstep.
If your order ships via freight, you'll get a separate email with a direct link to the carrier's tracking page — easy and stress-free.
Things happen on the road — even to boxes. If your order arrives damaged, snap a few clear photos of the box and product and send them our way right away.
If your shipment is lost, just email or call us — we'll help track it down and guide you through the next steps to make it right.
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1ST CLASS SERVICE
805-267-9762or email Support@FFPerformance.co
Car parts can be a maze — good thing we brought the map. Our team's here to keep things smooth, simple, and maybe even a little fun.
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