Exterior Components› Body Panels and Components

BMW M Performance

M Performance PUR-RIM Rear Diffusor

$591.00

SKU: 51192339218

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The BMW M Performance rear diffusor is an exterior enhancement designed to add an aggressive style to the rear of select BMW 4 Series models. Constructed using a PUR-RIM (Polyurethane Reaction Injected Molding) process, it offers both strength and light weight. The diffusor features a black matte finish that can be painted to match the vehicle's aesthetic.
Show original supplier description
The BMW M Performance rear diffusor is crafted to provide an aggressive visual upgrade for the rear of your BMW 4 Series. Manufactured from PUR-RIM (Polyurethane Reaction Injected Molding), this component offers durability and a lightweight design, complementing the vehicle's performance-oriented image. It comes with a black matte finish, providing a sleek look that can also be painted to match your specific color preferences. This M Performance rear diffusor is specifically designed to accentuate the natural lines of the BMW 4 Series, adding a noticeable aggressive touch to the overall appearance. It is intended for models equipped with the M Sport package, ensuring seamless integration with the vehicle's existing bodywork. The product fits various 435i and 440i models, including both Coupe (F32) and Convertible (F33) body styles, across model years 2014 through 2020. Specific fitment includes 435i, 435i xDrive, 440i, and 440i xDrive variants within this range.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandBMW M Performance
Part Number51192339218
CategoryExterior Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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