Pop the trunk on your G90 or G99 M5 and the factory diffuser is still finished in painted plastic — this replacement gives the rear end the same materials story as the rest of a built M5.
This is a custom Feral Auto design, not a copy of any factory piece, built from premium 3K 2x2 twill carbon fiber for a rigid, motorsport-grade finish that accentuates the M5's aggressive rear styling for an OEM-like fit while helping manage airflow off the diffuser. All necessary installation hardware is included.
Carbon fiber has a lot going for it over factory plastic and lower-grade composites. It's durable, lightweight, and provides a much better look — which is why it's become a staple upgrade across the performance vehicle community.
Please note: Matte and Forged Carbon finishes are non-refundable once production has started.
Current estimated lead time is approximately 35-45 business days from order to ship.
2025-2027 BMW G90 M5
2025-2027 BMW G99 M5
Please note that all products must be installed by a professional. Minor adjustments may be required during installation, which are typical procedures and not indicative of defects. Additionally, please be aware that most carbon fiber products are handmade, resulting in slight variations between items.
Tell us about your vehicle and our team will get back to you shortly.
Our products are proudly designed & engineered in the United States of America.
Feral Auto ships via reputable carriers to help ensure orders arrive fast and safe.
You can drive with confidence thanks to our premium materials and quality assurance.
