For BMW 4 Series F32 F33 F36 M Sport Carbon Fiber Rear Bumper Diffuser Valance Lip | 420i 428i 430i 435i 440i M-tech

In stock
Regular price $ 360.99
Regular price Sale $ 447.11 Sale price $ 360.99
Why AhaCarbon?
At ahacarbon, we understand that the quality of carbon fiber products matters. That's why we have a team of experts who meticulously inspect every item before it ships out to you. Unlike other companies, we don't compromise on quality to save costs. All of our products are made with top-grade carbon fiber materials, ensuring maximum durability and an exceptional finish. We are committed to delivering consistent, high-quality products to our customers every time, and we stand behind our work with a satisfaction guarantee. Trust us to elevate the look of your vehicle with our premium carbon fiber exterior additions.

Are you the enthusiast seeking a refined aesthetic and aerodynamic design? If yes, let's do the ultimate upgrade to your BMW F32, F33, or F36 4 series.

This M Performance carbon fiber rear diffuser will captivate a dynamic look on your BMW 4 Series F32/F33/F36 (420i, 428i, 430i, 435i, 440i, 420d, 425d, 430d, 435d) M Sport. Our carbon rear diffuser is made with the best material to withhold against road debris and sun damage as best as possible. This diffuser features a 3K twill weave that will nicely match any other carbon fiber parts you have on your car from Ahacarbon. And it's coated with a UV protectant clear coat to retain its look from the moment you get it and prevent it from fading! This carbon fibre BMW rear diffuser showcases a gloss carbon finish that captivates a modern aesthetic on your BMW 4 Series for a signature appearance on every occasion.

This carbon fiber rear diffuser for BMW F32/F33/F36 M Tech is backed by our fitment and quality guarantee to ensure that this product is going to fit well and hold its quality. Every BMW 4 Series diffuser is quality checked before it leaves our facility to ensure you get a product free of defects. The diffuser is a direct replacement for the factory plastic diffuser, installation is an easy bolt-on application process, however, professional installation is recommended.

Choose Ahacarbon carbon fiber bumper diffuser for your F32/F33/F36 M Sport carbon fiber needs and receive a product you can be proud to install on your vehicle.


  • Model: for BMW 4 Series F32 F33 F36 (420i 428i 430i 435i 440i 420d 425d 430d 435d) M Sport 2-Door 4-Door
  • Year: 2014 2015 2016 2017 2018 2019
  • Note: Not for BMW F32/F33/F36 Base Models

Important Notices:

Pls check the above fitment information or send us car pictures to verify before order, thanks a lot!
If your car has a rear sensor door, please order it prudently, the function of sensor may be blocked after the product is installed.


  • Material: Quality 3X3 weave carbon fiber
  • Functions: Light and durable, create a new iconic look, enhancing the aerodynamic performance of the car
  • Processing: 3D design, CNC moulding, test installation on real car, fitment guaranteed
  • Surface finish: Double layered UV-Protected clear coating, shining and smooth surface
  • Packing: Multilayer protected export carton, shockproof and crashproof
  • Installation: Replacement style, self-tapping screws are included in the package. Recommend professional installation