Product Details
About this part
Form That Follows Performance
Turn heads and cut air with the CarBahn Carbon Fiber Rear Spoiler—designed to elevate the rear profile of your BMW M4 or BMW M440i while delivering real aerodynamic benefits. Precision-molded from high-quality carbon fiber, this spoiler reduces rear-end lift, enhancing stability at high speeds without compromising the clean factory lines of your G82.
Inspired by motorsport and engineered by Steve Dinan, the rear spoiler adds downforce where it counts, delivering better traction, sharper turn-in, and improved confidence when driving at the limit. Whether you're on the street or the track, it’s the perfect balance of aggressive styling and functional performance.
- Engineered by CarBahn for optimal aerodynamic efficiency
- Lightweight carbon fiber construction—rigid, durable, and stunning
- OEM fit and finish—installs seamlessly with factory mounting points
- Fits BMW G82 M4 Coupe & M440i Coupes
Make a statement every time you pull away.
Add race-bred attitude to your M4 with the CarBahn Carbon Fiber Rear Spoiler.
Fitment
Not sure it fits? Contact us with your car's year, model and VIN and we'll help you confirm before you order.
If a part doesn't fit as expected, contact us and we'll work with you to resolve it.
Majority of products have a fitment section in the product description or within the title.
Returns
- Unused, uninstalled parts can be returned or exchanged within 30 days of the order date.
- To start a return: Contact us first, don't use Return to Sender.
- Returns can have up to a 20% restocking fee.
- Built-to-order and special-order items can't be returned or cancelled once production begins.
Shipping
- Orders are processed 7 days a week to ensure your product ships as quickly as possible.
- Inspect parts within 10 days of delivery, and reach out regarding any damage or missing pieces.
See our Tariff Policy
Warranty
- All parts retain the manufacturer's warranty.
- Warranty claims are subject to the manufacturer's approval.