Up for sale a Brand New never installed F10 M5 Carbon Fiber diffuser. I purchased this for my F10 550 but unfortunately it did not fit because of the dinan exhaust tips are closer to the side of the bumper than the M5. I have seen others make it work for non M5 applications but totally depends on exhaust set up. For M5 this is a perfect fit. Just trying to get back what I paid nothing more. Asking $450 shipped. Any questions don't hesitate to ask, can provide more pictures if needed.