2014-2020 BMW 4 Series (F32 / F33 / F36) M Performance Style Rear Diffuser

This is the Kies M Performance style rear diffuser (non-carbon) for your F32 BMW 4 series. This will fit any of the F32 generation BMW 420i, 428i, 430i, 435i, 440i as well as the xi and diesel variations. Yes, it even fits the facelifted LCI F32 so don't you worry there! Our Kies performance style rear diffuser replaces the m sport diffuser so please make sure your vehicle is already equipped with the m sport package. If not, have no fear, you can purchase one of our Kies M sport style rear bumper conversions kits so you can have your cake and eat it too! Why Kies? If quality, fitment, and durability is important to you, look no further than Kies aerodynamics. Our industry leading manufacturer uses some of the most cutting edge technology, coupled with over 20+ years of experience to craft the highest quality, best fitting body panels so that the conversion process is painless and the end result is simply beautiful.  Kies kits are constructed using the same materials that OEMs use to m