Collection / BMW / BMW F80 M3

  • RW Signatures BMW F80 M3 & F82 F83 M4 Carbon Fiber Rear Diffuser
  • RW Signatures BMW F80 M3 & F82 F83 M4 Carbon Fiber Rear Diffuser

RW Signatures BMW F8x M3/M4 Carbon Fiber Diffuser

Part number: rws-f8x-03 $1,295.95 ADD TO CART

This RWS carbon fiber rear diffuser does in fact incorporate an optional LED brake light in the middle that can be wired to your OEM brake lights. RW Signatures has developed this design to include all the best diffuser features that we know people love, into one diffuser that will be an instant crowd stopper.


  • 2015+ BMW F80 M3 (Sedan)
  • 2015+ BMW F82 F83 M4 (Coupe/Convertible)


  • Real LED Brake light option
  • Unique design like no other
  • Real carbon fiber construction


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Speak to a CF Specialist today. Phone: (714) 328-4406


RW Signatures is happy to anounce the arrival of our new RWS carbon fiber diffuser for the BMW F80 M3 and F82 F84 M4. Each piece is build using genuine carbon fiber fabric in a 2x2 weave pattern. RWS can also order this diffuser in a 1x1 pattern if requested. Once built we polish the clear coat for a brilliant shine and it is quality checked not once but twice before shipping worldwide. This ensures you receive a product that is true to the RW brand; high quality while at a great price. All of RW Signatures products are designed in house in Anaheim CA to ensure precious measurements and a great fitting product.

This diffuser also incorporates an optional LED brake light that can be connected to your existing brake light wiring harness. If you have any further questions and/or concerns about this F8x M3/M4 diffuser please contact a CF expert today at 714.328.4406.


  - 2015+ BMW F80 M3 (Sedan)
  - 2015+ BMW F82 F83 M4 (Coupe/Convertible)


  - Genuine 2x2 cabon fiber craftsmanship
  - Designed in California, USA
  - Direct installation without any modifications
  - Unqiuely designed with an optional LED brake light
  - UV resistant clearcoat

Coming Soon.

Fits These Applications:

Year Make Model SubModel Engine Transmission Drive
2015 - 2019 BMW BMW F80 M3 BMW F80 M3 RWS
2015 - 2019 BMW BMW F82/F83 M4 BMW F82/F83 M4 RWS